Journal of Movement Disorders

Spatiotemporal Gait Parameters During Turning and Imbalance in Parkinson’s Disease: Video-Based Analysis From a Single Camera: HoYoung Jeon, Jung Hwan Shin, Ri Yu, Min Kyung Kang, Seungmin Lee, Seoyeon Kim, Bora Jin, Kyung Ah Woo, Han-Joon Kim, Beomseok Jeon; J Mov Disord. 2025;18(1):87-92. Published online December 23, 2024; DOI: https://doi.org/10.14802/jmd.24210

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Abstract PDF Supplementary Material: Objective
This study aims to objectively evaluate turning gait parameters in Parkinson’s disease (PD) patients using 2D-RGB video-based analysis and explore their relationships with imbalance.
Methods
We prospectively enrolled PD patients for clinical assessment, balance analysis and gait with 180º turning. Spatiotemporal gait parameters during turning were derived using video-based analysis and correlated with modified Hoehn and Yahr (mHY) stages and center of pressure (COP) oscillations.
Results
A total of 64 PD patients were enrolled. The PD patients with higher mHY stages (≥2.5) had significantly longer turning times, greater numbers of steps, wider step bases and less variability in step length during turns. COP oscillations were positively correlated with the mean turning time on both the anterior-posterior and right-left axes.
Conclusion
Spatiotemporal gait parameter during turning, derived from video-based gait analysis, may represent apromising biomarker for monitoring postural instability in PD patients.

Evidence-Based Review on Symptomatic Management of Huntington’s Disease: Jung Hwan Shin, Hui-Jun Yang, Jong Hyun Ahn, Sungyang Jo, Seok Jong Chung, Jee-Young Lee, Hyun Sook Kim, Manho Kim; J Mov Disord. 2025;18(1):111-111. Published online December 2, 2024; DOI: https://doi.org/10.14802/jmd.24140e; Corrects: J Mov Disord 2024;17(4):369

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Evidence-Based Review on Symptomatic Management of Huntington’s Disease: Jung Hwan Shin, Hui-Jun Yang, Jong Hyun Ahn, Sungyang Jo, Seok Jong Chung, Jee-Young Lee, Hyun Sook Kim, Manho Kim; J Mov Disord. 2024;17(4):369-386. Published online August 9, 2024; DOI: https://doi.org/10.14802/jmd.24140; Correction in: J Mov Disord 2025;18(1):111

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Abstract PDF Supplementary Material

Huntington’s disease (HD) is a neurodegenerative disorder characterized by motor, behavioral, and cognitive impairments and significant impacts on patient quality of life. This evidence-based review, conducted by the Korean Huntington Disease Society task force, systematically examines current pharmacological and nonpharmacological interventions for symptomatic management of HD. Following PRISMA guidelines, databases were searched for studies up to August 2022 that focused on 23 symptoms across four domains: motor, neuropsychological, cognition, and others. This review provides a comprehensive and systematic approach to the management of HD, highlighting the need for more high-quality clinical trials to develop robust evidence-based guidelines.

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A Practical Guide for Diagnostic Investigations and Special Considerations in Patients With Huntington’s Disease in Korea
Jangsup Moon, Eungseok Oh, Minkyeong Kim, Ryul Kim, Dallah Yoo, Chaewon Shin, Jee-Young Lee, Jong-Min Kim, Seong-Beom Koh, Manho Kim, Beomseok Jeon
Journal of Movement Disorders.2025; 18(1): 17. CrossRef

Investigation of the Long-Term Effects of Amantadine Use in Parkinson’s Disease: Sangmin Park, Jung Hwan Shin, Seung Ho Jeon, Chan Young Lee, Han-Joon Kim, Beomseok Jeon; J Mov Disord. 2023;16(2):224-226. Published online May 24, 2023; DOI: https://doi.org/10.14802/jmd.23037

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Absence of Alpha-Synuclein Pathology in the Stomach of a Patient With Prodromal Dementia With Lewy Bodies: Chaewon Shin, Seong-Ik Kim, Sung-Hye Park, Jung Hwan Shin, Chan Young Lee, Han-Joon Kim, Hyuk-Joon Lee, Seong-Ho Kong, Yun-Suhk Suh, Han-Kwang Yang, Beomseok Jeon; J Mov Disord. 2023;16(2):213-216. Published online April 26, 2023; DOI: https://doi.org/10.14802/jmd.22219

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Sensitivity of Detecting Alpha-Synuclein Accumulation in the Gastrointestinal Tract and Tissue Volume Examined: Chaewon Shin, Seong-Ik Kim, Sung-Hye Park, Jung Hwan Shin, Chan Young Lee, Han-Kwang Yang, Hyuk-Joon Lee, Seong-Ho Kong, Yun-Suhk Suh, Han-Joon Kim, Beomseok Jeon; J Mov Disord. 2022;15(3):264-268. Published online July 26, 2022; DOI: https://doi.org/10.14802/jmd.22042

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Abstract PDF Supplementary Material

Objective
This study aimed to evaluate whether a larger tissue volume increases the sensitivity of detecting alpha-synuclein (AS) pathology in the gastrointestinal (GI) tract.
Methods
Nine patients with Parkinson’s disease (PD) or idiopathic rapid eye movement sleep disorder (iRBD) who underwent GI operation and had full-depth intestinal blocks were included. All patients were selected from our previous study population. A total of 10 slides (5 serial sections from the proximal and distal blocks) per patient were analyzed.
Results
In previous studies, pathologic evaluation revealed phosphorylated AS (+) in 5/9 patients (55.6%) and in 1/5 controls (20.0%); in this extensive examination, this increased to 8/9 patients (88.9%) but remained the same in controls (20.0%). The severity and distribution of positive findings were similar between patients with iRBD and PD.
Conclusion
Examining a large tissue volume increased the sensitivity of detecting AS accumulation in the GI tract.

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Symmetric and Profound Monoaminergic Degeneration in Parkinson’s Disease with Premotor REM Sleep Behavior Disorder
Kyung Ah Woo, Han-Joon Kim, Jung Hwan Shin, Kangyoung Cho, Hongyoon Choi, Beomseok Jeon
Journal of Parkinson’s Disease.2024; 14(4): 823. CrossRef

Development of Clinical Milestones in Parkinson’s Disease After Bilateral Subthalamic Deep Brain Stimulation: Jed Noel A. Ong, Jung Hwan Shin, Seungho Jeon, Chan Young Lee, Han-Joon Kim, Sun Ha Paek, Beomseok Jeon; J Mov Disord. 2022;15(2):124-131. Published online May 26, 2022; DOI: https://doi.org/10.14802/jmd.21106

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Abstract PDF Supplementary Material

Objective
Deep brain stimulation of the subthalamic nucleus (STN-DBS) in Parkinson’s disease (PD) patients does not halt disease progression, as these patients will progress and develop disabling non-levodopa responsive symptoms. These features may act as milestones that represent the overall functionality of patients after DBS. The objective of this study was to investigate the development of clinical milestones in advanced PD patients who underwent bilateral STN-DBS.
Methods
The study evaluated PD patients who underwent STN-DBS at baseline up to their last follow-up using the Unified Parkinson’s Disease Rating Scale and Hoehn and Yahr scale. The symptoms of hallucinations, dysarthria, dysphagia, frequent falls, difficulty walking, cognitive impairment and the loss of autonomy were chosen as the clinical milestones.
Results
A total of 106 patients with a mean age of 47.21 ± 10.52 years at disease onset, a mean age of 58.72 ± 8.74 years at surgery and a mean disease duration of 11.51 ± 4.4 years before surgery were included. Initial improvement of motor symptoms was seen after the surgery with the appearance of clinical milestones over time. Using the moderately disabling criteria, 81 patients (76.41%) developed at least one clinical milestone, while 48 patients (45.28%) developed a milestone when using the severely disabling criteria.
Conclusion
STN-DBS has a limited effect on axial and nonmotor symptoms of the PD patients, in contrast to the effect on motor symptoms. These symptoms may serve as clinical milestones that can convey the status of PD patients and its impact on the patients and their caregivers. Therefore, advanced PD patients, even those treated with bilateral STN-DBS, will still require assistance and cannot live independently in the long run.

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Unveiling the Impact of Outpatient Physiotherapy on Specific Motor Symptoms in Parkinson’s Disease: A Prospective Cohort Study
Yuta Terasawa, Koki Ikuno, Shintaro Fujii, Yuki Nishi, Emi Tanizawa, Sachio Nabeshima, Yohei Okada
Brain & Neurorehabilitation.2023;[Epub] CrossRef

Automatic Measurement of Postural Abnormalities With a Pose Estimation Algorithm in Parkinson’s Disease: Jung Hwan Shin, Kyung Ah Woo, Chan Young Lee, Seung Ho Jeon, Han-Joon Kim, Beomseok Jeon; J Mov Disord. 2022;15(2):140-145. Published online January 19, 2022; DOI: https://doi.org/10.14802/jmd.21129

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Abstract PDF Supplementary Material

Objective
This study aims to develop an automated and objective tool to evaluate postural abnormalities in Parkinson’s disease (PD) patients.
Methods
We applied a deep learning-based pose-estimation algorithm to lateral photos of prospectively enrolled PD patients (n = 28). We automatically measured the anterior flexion angle (AFA) and dropped head angle (DHA), which were validated with conventional manual labeling methods.
Results
The automatically measured DHA and AFA were in excellent agreement with manual labeling methods (intraclass correlation coefficient > 0.95) with mean bias equal to or less than 3 degrees.
Conclusion
The deep learning-based pose-estimation algorithm objectively measured postural abnormalities in PD patients.

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Research Progress of Camptocormia in Parkinson Disease
Yilin Lu, Xiang Zhang, Junyu Li, Weishi Li, Miao Yu
Clinical Spine Surgery.2025; 38(2): 39. CrossRef
Spatiotemporal Gait Parameters During Turning and Imbalance in Parkinson’s Disease: Video-Based Analysis From a Single Camera
HoYoung Jeon, Jung Hwan Shin, Ri Yu, Min Kyung Kang, Seungmin Lee, Seoyeon Kim, Bora Jin, Kyung Ah Woo, Han-Joon Kim, Beomseok Jeon
Journal of Movement Disorders.2025; 18(1): 87. CrossRef
Botulinum Toxin for Axial Postural Abnormalities in Parkinson’s Disease: A Systematic Review
Marialuisa Gandolfi, Carlo Alberto Artusi, Gabriele Imbalzano, Serena Camozzi, Mauro Crestani, Leonardo Lopiano, Michele Tinazzi, Christian Geroin
Toxins.2024; 16(5): 228. CrossRef
Three‐Dimensional Mesh Recovery from Common 2‐Dimensional Pictures for Automated Assessment of Body Posture in Camptocormia
Robin Wolke, Olga Gavriliuc, Oliver Granert, Günther Deuschl, Nils G. Margraf
Movement Disorders Clinical Practice.2023; 10(3): 472. CrossRef
Assessment of Axial Postural Abnormalities in Parkinsonism: Automatic Picture Analysis Software
Carlo Alberto Artusi, Christian Geroin, Gabriele Imbalzano, Serena Camozzi, Stefano Aldegheri, Leonardo Lopiano, Michele Tinazzi, Nicola Bombieri
Movement Disorders Clinical Practice.2023; 10(4): 636. CrossRef
Camera- and Viewpoint-Agnostic Evaluation of Axial Postural Abnormalities in People with Parkinson’s Disease through Augmented Human Pose Estimation
Stefano Aldegheri, Carlo Alberto Artusi, Serena Camozzi, Roberto Di Marco, Christian Geroin, Gabriele Imbalzano, Leonardo Lopiano, Michele Tinazzi, Nicola Bombieri
Sensors.2023; 23(6): 3193. CrossRef

A Rare Case of Late Adult-Onset Niemann-Pick Disease Type C: Ryul Kim, Dallah Yoo, Sangmin Park, Jung Hwan Shin, Ji-Hyun Choi, Han-Joon Kim, Beomseok Jeon; J Mov Disord. 2020;13(2):163-165. Published online March 18, 2020; DOI: https://doi.org/10.14802/jmd.19077

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Lysosomal storage disorders identified in adult population from India: Experience of a tertiary genetic centre and review of literature
Jayesh Sheth, Aadhira Nair, Riddhi Bhavsar, Koumudi Godbole, Chaitanya Datar, Sheela Nampoothiri, Inusha Panigrahi, Heli Shah, Shruti Bajaj, Naresh Tayade, Naveen Bhardwaj, Harsh Sheth
JIMD Reports.2024; 65(2): 85. CrossRef
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