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Keywords = hemiplegia

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12 pages, 449 KiB  
Article
A Study on the Effects of a Self-Administered Eye Exercise Program on the Balance and Gait Ability of Chronic Stroke Patients: A Randomized Controlled Trial
by Chung-Hyun Son, Geon-Woo Sim and Kyoung Kim
J. Pers. Med. 2024, 14(6), 595; https://doi.org/10.3390/jpm14060595 (registering DOI) - 2 Jun 2024
Abstract
This study investigates the effects of a self-administered eye exercise (SEE) program on the balance and gait ability of chronic stroke patients hospitalized due to hemiplegia. This study includes 42 patients diagnosed with stroke-related hemiplegia and hospitalized at D Rehabilitation Hospital. The researcher [...] Read more.
This study investigates the effects of a self-administered eye exercise (SEE) program on the balance and gait ability of chronic stroke patients hospitalized due to hemiplegia. This study includes 42 patients diagnosed with stroke-related hemiplegia and hospitalized at D Rehabilitation Hospital. The researcher randomly allocated 42 patients into two groups: the experimental group (EG, n = 21, mean age = 58.14 ± 7.69 years, mean BMI = 22.83 ± 2.19 kg/m2) and the control group (CG, n = 21, mean age = 58.57 ± 6.53 years, mean BMI = 22.81 ± 2.36 kg/m2). The SEE program was applied to the EG and the general self-administered exercise (SE) program was applied to the CG. After 4 weeks of intervention, weight distribution of the affected side, the Timed Up and Go test (TUG), step length of the affected side, step length of the unaffected side, gait speed, and cadence were analyzed and compared. In the within-group comparison, both groups showed significant differences in weight distribution (p < 0.05), TUG (p < 0.05), step length of the affected side (p < 0.05), step length of the unaffected side (p < 0.05), gait speed (p < 0.05), and cadence (p < 0.05). In the between-group comparison, a significant difference in the TUG (p < 0.05) was observed. The SEE program had an overall similar effect to the SE program in improving the balance and gait ability of chronic stroke patients, and had a greater effect on dynamic balance ability. Therefore, the SEE program can be proposed as a self-administered exercise program to improve balance and gait ability in stroke patients who are too weak to perform the SE program in a clinical environment or have a high risk of falling. Full article
(This article belongs to the Section Methodology, Drug and Device Discovery)
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<p>Study flow chart.</p>
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9 pages, 1379 KiB  
Case Report
Stroke Caused by Vasculitis Induced by Periodontitis-Associated Oral Bacteria after Wisdom Teeth Extraction
by David Kiramira, Timo Uphaus, Ahmed Othman, Ralf Heermann, James Deschner and Lena Katharina Müller-Heupt
Brain Sci. 2024, 14(6), 550; https://doi.org/10.3390/brainsci14060550 - 28 May 2024
Viewed by 221
Abstract
Invasive dental procedures, such as wisdom teeth removal, have been identified as potential triggers for vascular events due to the entry of oral bacteria into the bloodstream, leading to acute vascular inflammation and endothelial dysfunction. This study presents the case of a 27-year-old [...] Read more.
Invasive dental procedures, such as wisdom teeth removal, have been identified as potential triggers for vascular events due to the entry of oral bacteria into the bloodstream, leading to acute vascular inflammation and endothelial dysfunction. This study presents the case of a 27-year-old healthy male who developed ischemic stroke resulting from bacteremia after undergoing wisdom teeth extraction. Initially, the patient experienced fever and malaise, which were followed by right-sided hemiplegia. Diagnostic imaging, including a CT scan, identified a subacute infarction in the posterior crus of the left internal capsule, and MRI findings indicated inflammatory changes in the masticatory muscles. Further investigations involving biopsies of the masticatory muscles, along with blood and cerebrospinal fluid samples, confirmed bacterial meningitis with associated vasculitis. Notably, oral bacteria linked to periodontitis, including Porphyromonas gingivalis, Fusobacterium nucleatum, Tannerella forsythia, and Parvimonas micra, were found in the biopsies and microbiological analyses. To the best of our knowledge, this is the first reported case showing that bacteremia following dental procedures can lead to such severe neurological outcomes. This case underscores the importance of recognizing bacteremia-induced vasculitis in patients presenting with neurological symptoms post-dental procedures, emphasizing the broader implications of oral infections in such pathologies. Full article
(This article belongs to the Special Issue Biomarkers of Vascular Changes in Neurological Diseases)
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<p>Depiction of an ischemic lesion (white arrow) in the posterior limb of the left internal capsule (<b>A</b>. choroidal artery territory) on MRI. Demarcation on T2 FLAIR-w image (<b>A</b>) and Diffusion restriction on b1000 image (<b>B</b>) and ADC map (<b>C</b>).</p>
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<p>Meningitis and secondary CNS vasculitis on MRI. Axial (<b>A</b>) and coronal (<b>B</b>) reconstructions of contrast-enhanced T1 SPACE image showing basal contrast enhancement predominantly in the basal cisterns around the circulus of Willis (circle). TOF MR angiography (MIP, posteroanterior view—(<b>C</b>)) shows severe stenoses of the intradural proximal cerebral arteries, predominantly in the distal ICA including carotid T bilaterally (arrows).</p>
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<p>Contrast enhanced axial T1 SPACE showing a marked inflammatory contrast enhancement of the mandible head and the surrounding soft tissue, especially the lateral pterygoidal and masseter muscle.</p>
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22 pages, 10000 KiB  
Article
A Multistage Hemiplegic Lower-Limb Rehabilitation Robot: Design and Gait Trajectory Planning
by Xincheng Wang, Hongbo Wang, Bo Zhang, Desheng Zheng, Hongfei Yu, Bo Cheng and Jianye Niu
Sensors 2024, 24(7), 2310; https://doi.org/10.3390/s24072310 - 5 Apr 2024
Viewed by 677
Abstract
Most lower limb rehabilitation robots are limited to specific training postures to adapt to stroke patients in multiple stages of recovery. In addition, there is a lack of attention to the switching functions of the training side, including left, right, and bilateral, which [...] Read more.
Most lower limb rehabilitation robots are limited to specific training postures to adapt to stroke patients in multiple stages of recovery. In addition, there is a lack of attention to the switching functions of the training side, including left, right, and bilateral, which enables patients with hemiplegia to rehabilitate with a single device. This article presents an exoskeleton robot named the multistage hemiplegic lower-limb rehabilitation robot, which has been designed to do rehabilitation in multiple training postures and training sides. The mechanism consisting of the thigh, calf, and foot is introduced. Additionally, the design of the multi-mode limit of the hip, knee, and ankle joints supports delivering therapy in any posture and training sides to aid patients with hemiplegia in all stages of recovery. The gait trajectory is planned by extracting the gait motion trajectory model collected by the motion capture device. In addition, a control system for the training module based on adaptive iterative learning has been simulated, and its high-precision tracking performance has been verified. The gait trajectory experiment is carried out, and the results verify that the trajectory tracking performance of the robot has good performance. Full article
(This article belongs to the Special Issue Design and Application of Wearable and Rehabilitation Robotics)
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<p>Prototype of the MHLRR. MHLRR: Multistage Hemiplegic Lower-Limb Rehabilitation Robot. Multiple training postures and training sides for patients with hemiplegia in all stages of recovery.</p>
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<p>The thigh assembly of the MHLRR: (<b>a</b>) The overall structure of the thigh; (<b>b</b>) The transmission structure of the hip joint; (<b>c</b>) The limiting structure of the hip joint, which includes five limiting modes for three training postures and two training sides.</p>
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<p>The calf assembly of the MHLRR: (<b>a</b>) The overall structure of the calf; (<b>b</b>) The transmission structure of the knee joint; (<b>c</b>) The limiting structure of the knee joint, which includes two limiting modes for two training sides.</p>
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<p>The foot assembly of the MHLRR: (<b>a</b>) The overall structure of the foot; (<b>b</b>) The transmission structure of the ankle joint; (<b>c</b>) The limiting structure of the ankle joint, which includes two limiting modes for two training sides.</p>
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<p>The motion capture acquisition device: Xsens MVN Link. (<b>a</b>) The profile and detailed parameters; (<b>b</b>) The participant wearing the device and the transmission process of the signal.</p>
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<p>A complete gait cycle of the participant.</p>
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<p>The gait motion trajectories collected from the participant. (<b>a</b>) The gait motion trajectories of the left hip joint; (<b>b</b>) The gait motion trajectories of the left knee joint; (<b>c</b>) The gait motion trajectories of the left ankle joint.</p>
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<p>The preprocessed data of the hip angle.</p>
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<p>The peak-finding positions of the hip joint after wavelet denoising.</p>
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<p>The extractions of hip joint angular displacement for 18 sets of individual cycles.</p>
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<p>BP neural network model.</p>
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<p>Three-layer BP neural network.</p>
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<p>(<b>a</b>) Training set fitting simulation; (<b>b</b>) Test set fitting simulation.</p>
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<p>Fitting curve of the gait trajectory. (<b>a</b>) Fitting curve of the hip joint; (<b>b</b>) Fitting curve of the knee joint; (<b>c</b>) Fitting curve of the ankle joint.</p>
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<p>(<b>a</b>) Gait trajectory of the digital models; (<b>b</b>) Gait trajectories in the CGA database.</p>
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<p>The coordinate system of the leg orthosis of the MHLRR.</p>
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<p>Control block diagram of iterative learning.</p>
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<p>Simulation block diagram of the control system.</p>
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<p>Angle tracking process with 10 iterations of learning. (<b>a</b>) Hip joint position tracking curve during 10 iterations; (<b>b</b>) Knee joint position tracking curve during 10 iterations; (<b>c</b>) Ankle joint position tracking curve during 10 iterations.</p>
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<p>Tracking error during 10 iterations. (<b>a</b>) Angle tracking error; (<b>b</b>) Speed tracking error.</p>
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<p>The tracking curve of joint position and velocity after 10 cumulative iterations of learning. (<b>a</b>) Hip joint position tracking after 10 iterations; (<b>b</b>) Knee joint position tracking after 10 iterations; (<b>c</b>) Ankle joint position tracking after 10 iterations; (<b>d</b>) Hip joint speed tracking after 10 iterations; (<b>e</b>) Knee joint speed tracking after 10 iterations; (<b>f</b>) Ankle joint speed tracking after 10 iterations.</p>
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<p>Hardware platform for motion control.</p>
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<p>Hardware platform for human–computer interaction.</p>
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<p>The complete cycle gait trajectory of the MHLRR.</p>
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<p>Comparison of the endpoint trajectories in gait.</p>
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<p>Comparison of joint angular displacement among desired trajectory, adaptive control trajectory, and PID control trajectory. (<b>a</b>) Comparison of hip joint angular displacement; (<b>b</b>) Comparison of knee joint angular displacement; (<b>c</b>) Comparison of ankle joint angular displacement.</p>
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18 pages, 2019 KiB  
Article
A Training Program Using Modified Joystick-Operated Ride-on Toys to Complement Conventional Upper Extremity Rehabilitation in Children with Cerebral Palsy: Results from a Pilot Study
by Sudha Srinivasan, Patrick Kumavor and Kristin Morgan
Bioengineering 2024, 11(4), 304; https://doi.org/10.3390/bioengineering11040304 - 23 Mar 2024
Viewed by 822
Abstract
The pilot study assessed the utility of a training program using modified, commercially available dual-joystick-operated ride-on toys to promote unimanual and bimanual upper extremity (UE) function in children with cerebral palsy (CP). The ride-on-toy training was integrated within a 3-week, intensive, task-oriented training [...] Read more.
The pilot study assessed the utility of a training program using modified, commercially available dual-joystick-operated ride-on toys to promote unimanual and bimanual upper extremity (UE) function in children with cerebral palsy (CP). The ride-on-toy training was integrated within a 3-week, intensive, task-oriented training camp for children with CP. Eleven children with hemiplegia between 4 and 10 years received the ride-on-toy training program 20–30 min/day, 5 days/week for 3 weeks. Unimanual motor function was assessed using the Quality of Upper Extremity Skills Test (QUEST) before and after the camp. During ride-on-toy training sessions, children wore activity monitors on both wrists to assess the duration and intensity of bimanual UE activity. Video data from early and late sessions were coded for bimanual UE use, independent navigation, and movement bouts. Children improved their total and subscale QUEST scores from pretest to post-test while increasing moderate activity in their affected UE from early to late sessions, demonstrating more equal use of both UEs across sessions. There were no significant changes in the rates of movement bouts from early to late sessions. We can conclude that joystick-operated ride-on toys function as child-friendly, intrinsically rewarding tools that can complement conventional therapy and promote bimanual motor functions in children with CP. Full article
(This article belongs to the Special Issue Novel Treatment Technologies in Physical Medicine and Rehabilitation)
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<p>Modified, commercially available ride-on toys used in the study.</p>
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<p>Framework for the manualized dual-joystick-operated ride-on-toy navigation training program.</p>
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<p>Training-related changes in scores on the standardized motor test (QUEST) assessed before and after the 3-week camp-based training program. * <span class="html-italic">p</span><math display="inline"><semantics> <mrow> <mo> </mo> <mo>≤</mo> <mo> </mo> </mrow> </semantics></math>0.05.</p>
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<p>Training-related changes in the intensity of affected UE activity during early and late DJT sessions. * <span class="html-italic">p</span><math display="inline"><semantics> <mrow> <mo> </mo> <mo>≤</mo> <mo> </mo> </mrow> </semantics></math>0.05, <math display="inline"><semantics> <mrow> <mo>†</mo> </mrow> </semantics></math> <span class="html-italic">p</span> &lt; 0.1.</p>
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<p>Training-related changes in the independent use of the affected UE for navigation from early to late sessions. * <span class="html-italic">p</span><math display="inline"><semantics> <mrow> <mo> </mo> <mo>≤</mo> <mo> </mo> </mrow> </semantics></math>0.05.</p>
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<p>Training-related changes in relative proportion of bimanual to unimanual activity during navigation in early and late sessions; Note: “C” stands for “Child” and higher activity ratio values indicate greater bimanual compared to unimanual activity.</p>
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19 pages, 5999 KiB  
Article
The Effect of a New Generation of Ankle Foot Orthoses on Sloped Walking in Children with Hemiplegia Using the Gait Real Time Analysis Interactive Lab (GRAIL)
by Federica Camuncoli, Giorgia Malerba, Emilia Biffi, Eleonora Diella, Eugenio Di Stanislao, Guerrino Rosellini, Daniele Panzeri, Luigi Piccinini and Manuela Galli
Bioengineering 2024, 11(3), 280; https://doi.org/10.3390/bioengineering11030280 - 16 Mar 2024
Viewed by 986
Abstract
Cerebral palsy poses challenges in walking, necessitating ankle foot orthoses (AFOs) for stability. Gait analysis, particularly on slopes, is crucial for effective AFO assessment. The study aimed to compare the performance of commercially available AFOs with a new sports-specific AFO in children with [...] Read more.
Cerebral palsy poses challenges in walking, necessitating ankle foot orthoses (AFOs) for stability. Gait analysis, particularly on slopes, is crucial for effective AFO assessment. The study aimed to compare the performance of commercially available AFOs with a new sports-specific AFO in children with hemiplegic cerebral palsy and to assess the effects of varying slopes on gait. Eighteen participants, aged 6–11, with hemiplegia, underwent gait analysis using GRAIL technology. Two AFO types were tested on slopes (uphill +10 deg, downhill −5 deg, level-ground). Kinematic, kinetic, and spatiotemporal parameters were analyzed. The new AFO contributed to significant changes in ankle dorsi-plantar-flexion, foot progression, and trunk and hip rotation during downhill walking. Additionally, the new AFO had varied effects on spatiotemporal gait parameters, with an increased stride length during downhill walking. Slope variations significantly influenced the kinematics and kinetics. This study provides valuable insights into AFO effectiveness and the impact of slopes on gait in hemiplegic cerebral palsy. The findings underscore the need for personalized interventions, considering environmental factors, and enhancing clinical and research approaches for improving mobility in cerebral palsy. Full article
(This article belongs to the Special Issue Technologies for Monitoring and Rehabilitation of Motor Disabilities)
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<p>On the left are traditional AFOs. On the right is the new-generation AFO. (<b>A</b>) sAFO: solid ankle foot orthoses; (<b>B</b>) NHT4: Nancy Hylton T4; (<b>C</b>) PLS: posterior leaf spring; (<b>D</b>) Pull up; (<b>E</b>) Ca.M.O.: carbon modular orthosis.</p>
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<p>A patient on the GRAIL during the experiment.</p>
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<p>Mean and standard deviation of the kinematics of the affected hip, knee, and ankle joints in the sagittal plane, hip abduction and adduction, rotation, and foot progression for commonly used AFOs (depicted in blue, oldAFO) and the new AFO (depicted in orange, newCAMOt1) after the adaptation period with the related SPM analysis. <span class="html-italic">X</span>-axis (0–100% gait cycle), <span class="html-italic">Y</span>-axis (degrees). Hip flexion extension (+)/(−), knee flexion extension (+)/(−), ankle dorsi-plantar-flexion (+)/(−). Hip abduction adduction (−)/(+), hip internal external rotation (+)/(−), foot progression: internal external (+)/(−).</p>
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<p>Mean and standard deviation of the kinematics of the hip, knee, and ankle joints in the sagittal plane for the affected and less affected sides with commonly used AFOs (oldAFO) and the new AFO (newCAMOt1) during downhill (in green), level-ground walking (in blue), and uphill (in red) conditions, along with the corresponding SPM analysis. <span class="html-italic">X</span>-axis (0–100% gait cycle), <span class="html-italic">Y</span>-axis (degrees). Hip flexion extension (+)/(−), knee flexion extension (+)/(−), ankle dorsi-plantar-flexion (+)/(−).</p>
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<p>Mean and standard deviation of the moment of the hip, knee, and ankle joints in the sagittal plane for the affected and less affected sides with commonly used AFOs (oldAFO) and the new AFO (newCAMOt1) during downhill (in green), level-ground walking (in blue), and uphill (in red) conditions, along with the corresponding SPM analysis. X-axis (0–100% gait cycle), Y-axis (Nm/kg). Hip flexion extension moment (−)/(+), knee flexion extension moment (−)/(+), ankle dorsi-plantar-flexion moment (−)/(+).</p>
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<p>Mean and standard deviation of the power of the hip, knee, and ankle joints in the sagittal plane for the affected and less affected sides with commonly used AFOs (oldAFO) and the new AFO (newCAMOt1) during downhill (in green), level-ground walking (in blue), and uphill (in red) conditions, along with the corresponding SPM analysis. X-axis (0–100% gait cycle), Y-axis (W/kg). The power is positive when the body generates energy through concentric muscle activity. The power is negative when the body absorbs energy through eccentric muscle activity or elongation of soft tissue.</p>
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14 pages, 522 KiB  
Article
An Exercise Prescription for Patients with Stroke and Sarcopenia Based on the Modified Delphi Study
by Jae Wan Yoo, Geun-Young Park, Hae-Yeon Park, Yeun Jie Yoo, Mi-Jeong Yoon, SeungYup Song, Kyung Hyun Park, Hooman Lee, Sangui Choi, Sun Im and Seong Hoon Lim
Life 2024, 14(3), 332; https://doi.org/10.3390/life14030332 - 1 Mar 2024
Viewed by 884
Abstract
Background: We aimed to develop a consensus on the need for and priorities of exercise to treat preexisting sarcopenia with hemiplegic stroke. Methods: A modified three-round Delphi study was conducted. The panelists responded to the questionnaire on a 7-point Likert scale. Responses were [...] Read more.
Background: We aimed to develop a consensus on the need for and priorities of exercise to treat preexisting sarcopenia with hemiplegic stroke. Methods: A modified three-round Delphi study was conducted. The panelists responded to the questionnaire on a 7-point Likert scale. Responses were returned with descriptive statistics in the next round. Consensus was defined as >75% agreement (score of 5–7) with a median > 5. The percentage of strong agreement (score of 6–7) and Kendall’s coefficient of concordance were calculated to demonstrate a more refined interpretation of the consensus. Results: Fifteen panelists contributed to all rounds. The need for exercise was demonstrated. The consensus was reached on 53 of 58 items in the first round and all items in the second and final rounds. The percentage of strong agreement was high for all but eight items. Conclusions: This study is the first Delphi study to investigate the need for and priorities of exercise for treating preexisting sarcopenia in stroke hemiplegia. We present a standard recommendation including 57 priorities and a strong recommendation including 49 priorities. The eight items that were excluded reflected factors that are less important to hemiplegic patients with poor balance, cognitive decline, or mental vulnerability. Full article
(This article belongs to the Special Issue Etiology, Prediction and Prognosis of Ischemic Stroke)
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<p>Flow diagram of the Delphi study.</p>
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10 pages, 3508 KiB  
Case Report
Acute Anterior Choroidal Artery Territory Infarction: A Case Series Report
by Antonia Tsika, Polyxeni Stamati, Zisis Tsouris, Antonios Provatas, Alexandra Papa, Dimitrios Tsimoulis, Stylliani Ralli, Vasileios Siokas and Efthimios Dardiotis
Neurol. Int. 2024, 16(2), 289-298; https://doi.org/10.3390/neurolint16020020 - 29 Feb 2024
Viewed by 997
Abstract
Due to the occlusion of the anterior choroidal artery (AChA), ischemic strokes are described with the classic clinical triad, namely hemiplegia, hemianesthesia, and homonymous hemianopsia. The aim of this study is to document the characteristic clinical presentation and course of AChA infract cases. [...] Read more.
Due to the occlusion of the anterior choroidal artery (AChA), ischemic strokes are described with the classic clinical triad, namely hemiplegia, hemianesthesia, and homonymous hemianopsia. The aim of this study is to document the characteristic clinical presentation and course of AChA infract cases. We describe five cases with acute infarction in the distribution of the AChA, admitted to the Neurological Department of the University General Hospital of Larissa. Results: All cases presented with hemiparesis and lower facial nerve palsy, while four of them had dysarthria, and two patients exhibited ataxia. Two cases underwent intravenous thrombolysis. A notable feature was the worsening of the clinical course, specifically the exacerbation of upper limb weakness within 48 h. Stabilization occurred after the third day, with the final development of a more severe clinical presentation than the initial one. Additionally, muscle weakness was more severe in the upper limb than in the lower limb. The recovery of upper limb function was poor in the three-month follow-up for the four cases. While vascular brain episodes are characterized by sudden onset, in AChA infraction, the clinical onset can be gradually developed over a few days, with a greater burden on the upper limb and poorer recovery. Full article
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<p>Brain MRI: (<b>a</b>) axial flair and (<b>b</b>) DWI, demonstrating acute ischemic infarction on left basal ganglia, in the distribution area of the left anterior choroidal artery.</p>
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<p>The patient’s brain MRI: axial flair (<b>a</b>,<b>c</b>) and DWI (<b>b</b>,<b>d</b>), with an acute ischemic lesion involving the left anterior choroidal artery. Also shown is ischemic microangiopathy.</p>
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<p>Brain MRI: axial flair (<b>a</b>,<b>c</b>) and DWI (<b>b</b>,<b>d</b>). This demonstrates the acute cerebral ischemia on the right AChA territory and an old ischemic stroke on the left AChA territory.</p>
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<p>Axial brain CT scan (<b>a</b>) on an emergency basis with ischemic microangiopathy, without any obvious acute ischemic stroke or hemorrhage; (<b>b</b>) an axial CT scan 2 days later with a hypodense lesion in the left basal ganglia region, on the distribution of the left anterior choroidal artery (AChA) and ischemic microangiopathy periventricular and on the basal ganglia.</p>
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<p>Brain MRI: axial flair (<b>a</b>) and DWI (<b>b</b>) manifesting right infarct extending from the right thalamus (posterior limb of the internal capsule) in the distribution of the right AChA.</p>
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15 pages, 13175 KiB  
Article
Design and Control of Upper Limb Rehabilitation Training Robot Based on a Magnetorheological Joint Damper
by Jintao Zhu, Hongsheng Hu, Wei Zhao, Jiabin Yang and Qing Ouyang
Micromachines 2024, 15(3), 301; https://doi.org/10.3390/mi15030301 - 22 Feb 2024
Cited by 1 | Viewed by 790
Abstract
In recent years, rehabilitation robots have been developed and used in rehabilitation training for patients with hemiplegia. In this paper, a rehabilitation training robot with variable damping is designed to train patients with hemiplegia to recover upper limb function. Firstly, a magnetorheological joint [...] Read more.
In recent years, rehabilitation robots have been developed and used in rehabilitation training for patients with hemiplegia. In this paper, a rehabilitation training robot with variable damping is designed to train patients with hemiplegia to recover upper limb function. Firstly, a magnetorheological joint damper (MR joint damper) is designed for the rehabilitation training robot, and its structural design and dynamic model are tested theoretically and experimentally. Secondly, the rehabilitation robot is simplified into a spring-damping system, and the rehabilitation training controller for human movement is designed. The rehabilitation robot dynamically adjusts the excitation current according to the feedback speed and human–machine interaction torque, so that the rehabilitation robot always outputs a stable torque. The magnetorheological joint damper acts as a clutch to transmit torque safely and stably to the robot joint. Finally, the upper limb rehabilitation device is tested. The expected torque is set to 20 N, and the average value of the output expected torque during operation is 20.02 N, and the standard deviation is 0.635 N. The output torque has good stability. A fast (0.5 s) response can be achieved in response to a sudden motor speed change, and the average expected output torque is 20.38 N and the standard deviation is 0.645 N, which can still maintain the stability of the output torque. Full article
(This article belongs to the Special Issue Magnetorheological Materials and Application Systems)
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<p>The prototype of the robot.</p>
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<p>The design scheme of the robot.</p>
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<p>Coordinate diagram of each joint of the upper limb.</p>
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<p>Range of upper limb motion trajectories.</p>
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<p>(<b>a</b>) Exploded view of MR joint damper; (<b>b</b>) MR joint damper model and real picture.</p>
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<p>Electromagnetic simulation of MR joint damper. (<b>a</b>) Simulation setting. (<b>b</b>) Cloud image of magnetic field distribution. (<b>c</b>) The magnetic field strength of the damping channel.</p>
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<p>The experimental device tests the relationship between the torque of MR joint damper and the current and speed.</p>
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<p>Comparison between model and experiment (dashed line is experimental data; solid line is function fitting curve).</p>
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<p>Hardware composition of the control system.</p>
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<p>Interactive torque data acquisition.</p>
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<p>Mass block-spring-damping system.</p>
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<p>Control strategy block diagram.</p>
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<p>Motion diagram.</p>
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<p>Upper limb rehabilitation exercise. (<b>a</b>) Velocity change and current change; (<b>b</b>) the end sensor monitors the change in the human–computer interaction force.</p>
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<p>Safety testing. (<b>a</b>) Velocity change and current change; (<b>b</b>) the end sensor monitors the change in the human–computer interaction force.</p>
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12 pages, 369 KiB  
Article
Risk Factor Analysis of Complications and Mortality Following Coil Procedures in Patients with Intracranial Unruptured Aneurysms Using a Nationwide Health Insurance Database
by So Yeon Park, So An Kim, Yu Hyeon An, Sang Won Kim, Saeyoon Kim, Jae Min Lee and Youngjin Jung
J. Clin. Med. 2024, 13(4), 1094; https://doi.org/10.3390/jcm13041094 - 15 Feb 2024
Viewed by 916
Abstract
(1) Background: Unruptured intracranial aneurysm (UIA) occurs in 1–2% of the population and is being increasingly detected. Patients with UIA are treated with close observation, endovascular coiling or surgical clipping. The proportion of endovascular coiling has been rising. However, complications such as cerebral [...] Read more.
(1) Background: Unruptured intracranial aneurysm (UIA) occurs in 1–2% of the population and is being increasingly detected. Patients with UIA are treated with close observation, endovascular coiling or surgical clipping. The proportion of endovascular coiling has been rising. However, complications such as cerebral infarction (CI), intracranial hemorrhage (ICRH), and death remain crucial issues after coil treatment. (2) Methods: We analyzed the incidence and risk factors of complications after the use of coil in patients with UIA based on the patients’ characteristics. We utilized the Health Insurance Review and Assessment (HIRA) database. Patients treated with coils for UIA between 1 January 2015 and 1 December 2021 were retrospectively analyzed. (3) Results: Of the total 35,140 patients, 1062 developed ICRH, of whom 87 died, with a mortality rate of 8.2%. Meanwhile, 749 patients developed CI, of whom 29 died, with a mortality rate of 3.9%. The overall mortality rate was 1.8%. In a univariate analysis of the risk factors, older age, males, a higher Charlson Comorbidity Index (CCI) score, and diabetes increase the risk of CI. Meanwhile, males with higher CCI scores and hemiplegia or paraplegia show increased ICRH risk. Older age, males and metastatic solid tumors relate to increased mortality risk. (4) Conclusions: This study is significant in that the complications based on the patient’s underlying medical condition were analyzed. Full article
(This article belongs to the Special Issue Advances in Diagnosis and Treatment of Intracranial Aneurysms)
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<p>Flowchart for patient selection.</p>
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11 pages, 791 KiB  
Systematic Review
Efficacy of Lower Limb Orthoses in the Rehabilitation of Children Affected by Cerebral Palsy: A Systematic Review
by Sandra Miccinilli, Fabio Santacaterina, Rebecca Della Rocca, Silvia Sterzi, Federica Bressi and Marco Bravi
Children 2024, 11(2), 212; https://doi.org/10.3390/children11020212 - 6 Feb 2024
Viewed by 1738
Abstract
Lower limb orthoses are frequently used in children suffering from cerebral palsy (CP) alongside rehabilitation. The aim of this study was to analyze the effectiveness of ankle–foot orthosis (AFO) and knee–ankle–foot orthosis (KAFO) in walking, balance maintenance, spasticity, and quality of life improvement [...] Read more.
Lower limb orthoses are frequently used in children suffering from cerebral palsy (CP) alongside rehabilitation. The aim of this study was to analyze the effectiveness of ankle–foot orthosis (AFO) and knee–ankle–foot orthosis (KAFO) in walking, balance maintenance, spasticity, and quality of life improvement during rehabilitation in children affected by CP. The hypothesis was that the use of orthoses could improve the parameters compared to non-use. A systematic review was conducted in the main databases, including English language RCTs published about the use of AFO and KAFO in combination or not with rehabilitation methods in children affected by CP and studies mentioning walking, balance, muscle length, and quality of life as outcomes. From an initial number of 1484 results, a final number of 11 RCTs were included, comprising a total number of 442 participants and showing an overall high risk of bias in 10 studies and some concerns in one study. Six studies investigated the domain of walking, four studies investigated the domain of balance, and two studies investigated how KAFO and AFO orthoses could improve and prevent muscle contractures. Using highly heterogeneous study designs, different kinds of orthoses and different assessment tools were used. Further studies conducted with higher methodological quality are needed to establish whether AFO and KAFO are useful or not in combination with rehabilitation in improving the investigated domains. Full article
(This article belongs to the Section Child Neurology)
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<p>PRISMA flowchart: identification of studies via databases and registers.</p>
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<p>ROB2 results: risk of bias of the included RCTs.</p>
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Review
A Review of Current Perspectives on Motoric Insufficiency Rehabilitation following Pediatric Stroke
by Hristina Colovic, Dragan Zlatanovic, Vesna Zivkovic, Milena Jankovic, Natasa Radosavljevic, Sinisa Ducic, Jovan Ducic, Jasna Stojkovic, Kristina Jovanovic and Dejan Nikolic
Healthcare 2024, 12(2), 149; https://doi.org/10.3390/healthcare12020149 - 9 Jan 2024
Viewed by 1119
Abstract
Pediatric stroke (PS) is an injury caused by the occlusion or rupture of a blood vessel in the central nervous system (CNS) of children, before or after birth. Hemiparesis is the most common motoric deficit associated with PS in children. Therefore, it is [...] Read more.
Pediatric stroke (PS) is an injury caused by the occlusion or rupture of a blood vessel in the central nervous system (CNS) of children, before or after birth. Hemiparesis is the most common motoric deficit associated with PS in children. Therefore, it is important to emphasize that PS is a significant challenge for rehabilitation, especially since the consequences may also appear during the child’s growth and development, reducing functional capacity. The plasticity of the child’s CNS is an important predecessor of recovery, but disruption of the neural network, specific to an immature brain, can have harmful and potentially devastating consequences. In this review, we summarize the complexity of the consequences associated with PS and the possibilities and role of modern rehabilitation. An analysis of the current literature reveals that Constraint-Induced Movement Therapy, forced-use therapy, repetitive transcranial magnetic stimulation, functional electrical stimulation and robot-assisted therapy have demonstrated at least partial improvements in motor domains related to hemiparesis or hemiplegia caused by PS, but they are supported with different levels of evidence. Due to the lack of randomized controlled studies, the optimal rehabilitation treatment is still debatable, and therefore, most recommendations are primarily based on expert consensuses, opinions and an insufficient level of evidence. Full article
(This article belongs to the Special Issue Management Topics in Medical Rehabilitation)
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<p>Pediatric stroke classification and specific risk factors. PAIS/AIS—(perinatal) arterial ischemic stroke; CVST—cerebral sinus venous thrombosis; HS—hemorrhagic stroke.</p>
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<p>Deficits and impairments in pediatric stroke.</p>
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<p>Current rehabilitation challenges after pediatric stroke (PS).</p>
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Article
Motion-Based Control Strategy of Knee Actuated Exoskeletal Gait Orthosis for Hemiplegic Patients: A Feasibility Study
by Yoon Heo, Hyuk-Jae Choi, Jong-Won Lee, Hyeon-Seok Cho and Gyoo-Suk Kim
Appl. Sci. 2024, 14(1), 301; https://doi.org/10.3390/app14010301 - 29 Dec 2023
Cited by 1 | Viewed by 741
Abstract
In this study, we developed a unilateral knee actuated exoskeletal gait orthosis (KAEGO) for hemiplegic patients to conduct gait training in real-world environments without spatial limitations. For this purpose, it is crucial that the controller interacts with the patient’s gait intentions. This study [...] Read more.
In this study, we developed a unilateral knee actuated exoskeletal gait orthosis (KAEGO) for hemiplegic patients to conduct gait training in real-world environments without spatial limitations. For this purpose, it is crucial that the controller interacts with the patient’s gait intentions. This study newly proposes a simple gait control strategy that detects the gait state and recognizes the patient’s gait intentions using only the motion information of the lower limbs obtained from an embedded inertial measurement units (IMU) sensor and a knee angle sensor without employing ground reaction force (GRF) sensors. In addition, a torque generation method based on negative damping was newly applied as a method to determine the appropriate amount of assistive torque to support flexion or extension movements of the knee joint. To validate the performance of the developed KAEGO and the effectiveness of our proposed gait control strategy, we conducted walking tests with a hemiplegic patient. These tests included verifying the accuracy of gait recognition and comparing the metabolic cost of transport (COT). The experimental results confirmed that our gait control approach effectively recognizes the patient’s gait intentions without GRF sensors and reduces the metabolic cost by approximately 8% compared to not wearing the device. Full article
(This article belongs to the Section Robotics and Automation)
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<p>The system configuration of the developed KAEGO: (<b>a</b>) Gait training for a hemiplegic patient wearing the developed KAEGO; (<b>b</b>) The system structure of the KAEGO. It is similar to the KAFO structure except for the knee actuator module.</p>
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<p>The system configuration of the developed embedded control system: (<b>a</b>) The control system configuration diagram; (<b>b</b>) The manufactured knee actuator module and the developed embedded controller system including the sensor and communication module.</p>
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<p>The finite state machine for the KAEGO gait control.</p>
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<p>Motion categorization into three phase during a single gait cycle: (<b>a</b>) Stepwise motion changes in a gait cycle; (<b>b</b>) The angular displacement of the IMU roll, pitch, and knee angle linked to the progression of a single gait cycle, such as hip extension, weight shift, and knee flexion, respectively.</p>
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<p>A control block diagram representing the process of user gait intention recognition and assist mode transitions.</p>
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<p>Experimental setup for 10 m and 6 min walking tests: (<b>a</b>) 10 m walking test environment; (<b>b</b>) 6 min WT and the 60 m track.</p>
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<p>This illustrates the controller status during a hemiplegic patient’s 10 m WT. The graphs sequentially illustrate the hip angle, knee angle, negative damping torque, and total output torque (mA). The negative damping coefficients are set at 0.11 and 0.28 mNms/deg during the SWF and SWE states, respectively. Total output torque includes friction compensation and gravity compensation torque. The vertical lines in the graphs mark the transition to the ‘pre-swing’ state from the stance phase as the proposed controller recognizes the user’s gait intention.</p>
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<p>This illustrates the controller status during a normal person’s 10 m WT. The graphs sequentially illustrate the hip angle, knee angle, negative damping torque, and total output torque (mA). The negative damping coefficients are set to 0 as no power assistance is needed for a normal person. The graph only displays the pre-swing torque. Total output torque includes friction compensation and gravity compensation torque. The vertical lines in the graphs mark the transition to the ‘pre-swing’ state from the stance phase as the proposed controller recognizes the user’s gait intention.</p>
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11 pages, 1951 KiB  
Perspective
Novel Modular Walking Orthosis (MOWA) for Powerful Correction of Gait Deviations in Subjects with a Neurological Disease
by Jan-Hagen Schröder, Gion A. Barandun, Pascal Leimer, Rafael Morand, Beat Göpfert and Erich Rutz
Children 2024, 11(1), 30; https://doi.org/10.3390/children11010030 - 26 Dec 2023
Viewed by 1061
Abstract
This article introduces a novel concept where advanced technologies have been leveraged to produce a modular walking orthosis (MOWA) within a completely digital process chain. All processes of this new supply chain are described step-by-step. The prescription and treatment of lower leg orthoses [...] Read more.
This article introduces a novel concept where advanced technologies have been leveraged to produce a modular walking orthosis (MOWA) within a completely digital process chain. All processes of this new supply chain are described step-by-step. The prescription and treatment of lower leg orthoses for individuals with paralysis or muscle weakness, particularly cerebral palsy (CP), are complex. A single case study indicates successful treatment with this new orthosis (MOWA). From the authors’ perspective, this innovative fitting concept is promising and will contribute to creating more efficient care within a multidisciplinary team. Full article
(This article belongs to the Special Issue Lifestyle Medicine for Children and Adolescents)
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<p>(<b>Left</b>): Prototype orthosis with standardized marker set up during gait by 3D gait analysis. (<b>Right</b>): Transfer of deformations into simulation software (finite element modelling, FEM) for the calculation of forces and torque in the orthosis at different points A–F.</p>
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<p>Systematic supply sequence using the MOWA system.</p>
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<p>Systematic representation of where the inertial sensors for the gait analysis tool from MOWA are placed on the patient.</p>
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<p>MOWA—orthosis with ventral medial (1) and with dorsal medial (2).</p>
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<p>Examination in the Laboratory for Movement Analysis of the University of Basel Children’s Hospital (UKBB), Basel, with MOWA—orthosis and simultaneous gait analysis with MOWA inertial sensors.</p>
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<p>(<b>a</b>–<b>f</b>): Vertical ground reaction force for affected and non-affected side. Comparison between walking barefoot (<b>a</b>,<b>d</b>), standard orthosis (<b>b</b>,<b>e</b>), and MOWA orthosis (<b>c</b>,<b>f</b>). Vertical line at about 60%: foot leaves the ground (Foot-Off). The vertical ground reaction force shows a high load rate on the non-affected side when walking barefoot (<b>a</b>) compared to the two orthosis (<b>b</b>,<b>c</b>). However, the maximum vertical ground reaction force is higher with the standard orthosis (B) than when walking barefoot (A) and with the MOWA orthosis (C). Furthermore, the vertical ground reaction force during the stance phase with the MOWA orthosis shows a similar pattern to that of healthy subjects (C).</p>
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10 pages, 281 KiB  
Review
Is Anosognosia for Left-Sided Hemiplegia Due to a Specific Self-Awareness Defect or to a Poorly Conscious Working Mode Typical of the Right Hemisphere?
by Guido Gainotti
Behav. Sci. 2023, 13(12), 964; https://doi.org/10.3390/bs13120964 - 23 Nov 2023
Viewed by 1103
Abstract
This review aimed to evaluate whether the association between ‘anosognosia for hemiplegia’ and lesions of the right hemisphere points to a special self-awareness role of the right side of the brain, or could instead be due to a working mode typical of the [...] Read more.
This review aimed to evaluate whether the association between ‘anosognosia for hemiplegia’ and lesions of the right hemisphere points to a special self-awareness role of the right side of the brain, or could instead be due to a working mode typical of the right hemisphere. This latter viewpoint is consistent with a recently proposed model of human brain asymmetries that assumes that language lateralization in the left hemisphere might have increased the left hemisphere’s level of consciousness and intentionality in comparison with the right hemisphere’s less conscious and more automatic functioning. To assess these alternatives, I tried to ascertain whether anosognosia is greater for left-sided hemiplegia than for other disorders provoked by right brain lesions, or whether unawareness prevails in tasks more clearly related to the disruption of the right hemisphere’s more automatic (and less conscious) functioning. Data consistent with the first alternative would support the existence of a specific link between anosognosia for hemiplegia and self-awareness, whereas data supporting the second option would confirm the model linking anosognosia to a poorly conscious working mode typical of the right hemisphere. Analysis results showed that the incidence of anosognosia of the highly automatic syndrome of unilateral neglect was greater than that concerning the unawareness of left hemiplegia, suggesting that anosognosia for left-sided hemiplegia might be due to the poorly conscious working mode typical of the right hemisphere. Full article
(This article belongs to the Special Issue Conceptual and Empirical Connections between Self-Processes)
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Article
Surgical Clipping of Intracranial Aneurysms Using a Transcranial Neuroendoscopic Approach
by Zhiyang Li, Pan Lei, Qiuwei Hua, Long Zhou, Ping Song, Lun Gao, Silei Zhang and Qiang Cai
Brain Sci. 2023, 13(11), 1544; https://doi.org/10.3390/brainsci13111544 - 2 Nov 2023
Viewed by 1264
Abstract
Objective: This retrospective study was performed to evaluate the feasibility and safety of surgically clipping intracranial aneurysms using a transcranial neuroendoscopic approach. Methods: A total of 229 patients with cerebral aneurysms were included in our study, all of whom were treated with clamping [...] Read more.
Objective: This retrospective study was performed to evaluate the feasibility and safety of surgically clipping intracranial aneurysms using a transcranial neuroendoscopic approach. Methods: A total of 229 patients with cerebral aneurysms were included in our study, all of whom were treated with clamping surgery at Wuhan University People’s Hospital. They were divided into neuroendoscopic and microscopic groups, according to whether or not neuroendoscopy was used for the clamping surgery. We statistically analyzed the patients’ baseline data, surgical outcomes, and complications, which were then evaluated to assess the treatment effect. Results: The baseline characteristics were not statistically significant, except for gender, for which the proportions of female patients in the two groups were 69 (56.1%) and 46 (43.4%). There were no patients with incomplete aneurysm clamping or parent vessel occlusion in the neuroendoscopic group, and there were 4 (3.8%) and 2 (1.9%) in the microscopic group, respectively; however, there was no statistically significant difference in the comparison of the two groups. The mean operative times of the two groups were 181 min and 154 min, respectively, and were statistically different. However, the mRS scores of the two groups showed no significant difference in patient prognosis. The differences in complications (including limb hemiplegia, hydrocephalus, vision loss, and intracranial infection) were not statistically significant, except for cerebral ischemia, for which the proportions of patients in the two groups were 8 (6.5%) and 16 (15.1%). Conclusions: Neuroendoscopy can provide clear visualization and multi-angle views during aneurysm clipping, which is helpful for ensuring adequate clipping and preventing complications. Full article
(This article belongs to the Section Neurosurgery and Neuroanatomy)
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<p>Flow chart for patient selection. Information on 310 patients was collected, of which 81 patients were excluded due to multiple reasons, and finally, 229 patients were included for further analysis.</p>
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<p>An ACoA aneurysm was clipped via the traditional supraorbital keyhole approach under the neuroendoscope. (<b>A</b>) Preoperative CT showed mild subarachnoid hemorrhage. (<b>B</b>) Pre-operative CTA scan showed a saccular aneurysm at the anterior communicating artery complex. (<b>C</b>) Supraorbital keyhole approach was used. (<b>D</b>) The diameter of the bone flap was about 3 cm. (<b>E</b>) Sylvian fissure was sharply dissected and ICA, MCA, segment A1, and optic nerve were exposed under the neuroendoscope. (<b>F</b>) Aneurysm was exposed and clipped under the neuroendoscope. (<b>G</b>) We checked whether the parent artery and its branches were clamped correctly. (<b>H</b>) The aneurysm was cut to confirm complete clipping. (<b>I</b>) We carefully checked the operation area before closing the dura matter. (<b>J</b>) Postoperative CT scan showing that the clip of the aneurysm had proper placement.</p>
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<p>An A2 segment aneurysm was clipped via the traditional pterional approach under the neuroendoscope. (<b>A</b>) Preoperative CT showed subarachnoid hemorrhage. (<b>B</b>) Preoperative CTA showed that the aneurysm was located at the beginning of the A2 segment. (<b>C</b>) Pterional approach was used. (<b>D</b>) We opened the arachnoid membrane at the base of the anterior cranial fossa and released cerebrospinal fluid. (<b>E</b>) The right A1 segment was exposed and clipped temporarily. (<b>F</b>) Aneurysm was exposed and clipped under the neuroendoscope. (<b>G</b>) The parent artery and its branches were checked carefully. (<b>H</b>) Postoperative CT scan showing that the clip of the aneurysm had proper placement.</p>
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<p>A ruptured PCoA aneurysm was clipped via the traditional pterional approach under the neuroendoscope. (<b>A</b>) Pre-operative CT scan showed SAH. (<b>B</b>) Pre-operative CTA scan showed an irregular aneurysm of the PCoA. (<b>C</b>) An anterior clinoid process (ACP) was removed under the neuroendoscope before dura mater opening. (<b>D</b>) The aneurysm and the branches of the ICA were exposed under the neuroendoscope. (<b>E</b>) The aneurysm was clipped under the neuroendoscope. (<b>F</b>) The aneurysm was cut to confirm complete clipping. (<b>G</b>) We carefully checked the operation area before closing the dura matter. (<b>H</b>) Postoperative CT view.</p>
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<p>An unruptured MCA aneurysm was clipped via the traditional pterional approach under the neuroendoscope. (<b>A</b>) Pre-operative CT scan showed no SAH or hematoma in the brain. (<b>B</b>) Pre-operative CTA scan showed a saccular aneurysm at the left MCA bifurcation. (<b>C</b>) A sylvian fissure was sharply dissected under neuroendoscope. (<b>D</b>) Aneurysm and the branches of MCA were exposed under the neuroendoscope. (<b>E</b>) MCA was clipped temporarily. (<b>F</b>) Aneurysm was clipped under the neuroendoscope and temporary clip was removed. (<b>G</b>) Postoperative CT scan showing no hematoma and damage in the brain. (<b>H</b>) Postoperative CTA scan showed that aneurysm was clipped completely and the MCA and its branches were preserved.</p>
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<p>A ruptured M4 segment aneurysm with hematoma was clipped via modified straight skin incision line under the neuroendoscope. (<b>A</b>) Pre-operative CT scan showed a hematoma in left frontal lobe. (<b>B</b>) Pre-operative CTA scan showed an irregular aneurysm at the left M4 segment. (<b>C</b>) A modified straight skin incision line was used. (<b>D</b>) Hematoma was evacuated under the neuroendoscope. (<b>E</b>) Exposure of aneurysms, parent arteries, and their branches. (<b>F</b>) The aneurysm was clipped under the neuroendoscope. (<b>G</b>) Postoperative CT view. (<b>H</b>) The size of bone flap was displayed via three-dimensional reconstruction of skull CT after operation. (<b>I</b>) The aneurysm clip located at the M4 segment and the parental artery was preserved perfectly on postoperative CTA. (<b>J</b>) Patient recovered well after operation.</p>
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<p>A posterior inferior cerebellar artery (PICA) aneurysm was clipped via the traditional far-lateral surgical approach under the neuroendoscope. (<b>A</b>) Mild SAH was mainly located in the posterior fossa on pre-operative CT. (<b>B</b>) CTA before the operation showed the aneurysm arising at the origin of the left PICA. (<b>C</b>) After opening the dura, the arachnoid membrane was dissected sharply under the neuroendoscope. (<b>D</b>) The left VA, inferior loop of the PICA, accessory nerve, and medulla were identified after lifting the cerebellum. (<b>E</b>) A mini titanium aneurysm clip was used to clip the aneurysm neck after carefully examining the neck of aneurysm. (<b>F</b>) When the aneurysm was clipped, then the structures in the lateral perimedullary cistern were carefully checked. (<b>G</b>) The aneurysm clip was shown to have proper placement after the operation. (<b>H</b>) The parental artery was preserved perfectly on postoperative CTA.</p>
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<p>A P2 segment aneurysm was clipped via a modified small skin incision line under the neuroendoscope. (<b>A</b>) Preoperative CT showed subarachnoid hemorrhage in the circular cistern. (<b>B</b>) Preoperative CT showed hematoma in lateral ventricles. (<b>C</b>) Preoperative CTA showed that the aneurysm was located at the P2 segment. (<b>D</b>) Lateral ventricles were displayed via three-dimensional reconstruction of skull CT before operation. (<b>E</b>) Modified small skin incision line was used. (<b>F</b>) Aneurysm, parent arteries, and their branches were exposed. (<b>G</b>) Aneurysm was clipped and cut under the neuroendoscope. (<b>H</b>) Hematoma in lateral ventricles was evacuated. (<b>I</b>) The aneurysm clip was shown to have proper placement after the operation. (<b>J</b>) Postoperative CT showed that hematoma in lateral ventricles was removed. (<b>K</b>) The aneurysm clip located at the P2 segment and the parental artery was preserved perfectly on postoperative CTA. (<b>L</b>) Patient recovered well after operation.</p>
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