{"title":"Effects of Botulinum Neurotoxin on Muscle Mass and Volume in Individuals With Spastic Cerebral Palsy: A Systematic Review and Meta-analysis.","authors":"Ai-Chieh Lin, Yu-Chi Su, Yu-Ching Lin","doi":"10.1097/PHM.0000000000002705","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>The aim of the study was to comprehensively survey the impact of botulinum neurotoxin on muscle volume or mass in treating lower limb spasticity in individuals with spastic cerebral palsy.</p><p><strong>Design: </strong>We searched PubMed, Embase, Web of Science, and the Cochrane Library up to May 15, 2024. We focused on changes in the volume or mass of the gastrocnemius, triceps surae, or entire distal lower limb muscles at various follow-up periods. Meta-regression analysis was conducted to assess the moderating effects of age and gross motor function classification system level.</p><p><strong>Results: </strong>Our analysis included 11 cohort studies. A significant decrease in gastrocnemius muscle volume or mass was observed 2-3 mos after botulinum neurotoxin treatment (standardized mean difference -0.496, 95% confidence interval [-0.810, -0.181]) but not at earlier (standardized mean difference -0.134, [-0.397, 0.129]) or later (standardized mean difference -0.223, [-1.199, 0.752]) periods. The triceps surae and entire distal lower limb muscles showed no changes. Older patients ( P = 0.026) and those with Gross Motor Function Classification System I-II levels ( P = 0.0191) had more pronounced decreases.</p><p><strong>Conclusion: </strong>The present study showed a decrease in muscle volume or mass of the botulinum neurotoxin-injected gastrocnemius after a short follow-up period but not in the triceps surae or the distal lower limb in individuals with spastic cerebral palsy.</p>","PeriodicalId":7850,"journal":{"name":"American Journal of Physical Medicine & Rehabilitation","volume":" ","pages":"724-729"},"PeriodicalIF":2.2000,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"American Journal of Physical Medicine & Rehabilitation","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1097/PHM.0000000000002705","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/4 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"REHABILITATION","Score":null,"Total":0}
引用次数: 0
Abstract
Objective: The aim of the study was to comprehensively survey the impact of botulinum neurotoxin on muscle volume or mass in treating lower limb spasticity in individuals with spastic cerebral palsy.
Design: We searched PubMed, Embase, Web of Science, and the Cochrane Library up to May 15, 2024. We focused on changes in the volume or mass of the gastrocnemius, triceps surae, or entire distal lower limb muscles at various follow-up periods. Meta-regression analysis was conducted to assess the moderating effects of age and gross motor function classification system level.
Results: Our analysis included 11 cohort studies. A significant decrease in gastrocnemius muscle volume or mass was observed 2-3 mos after botulinum neurotoxin treatment (standardized mean difference -0.496, 95% confidence interval [-0.810, -0.181]) but not at earlier (standardized mean difference -0.134, [-0.397, 0.129]) or later (standardized mean difference -0.223, [-1.199, 0.752]) periods. The triceps surae and entire distal lower limb muscles showed no changes. Older patients ( P = 0.026) and those with Gross Motor Function Classification System I-II levels ( P = 0.0191) had more pronounced decreases.
Conclusion: The present study showed a decrease in muscle volume or mass of the botulinum neurotoxin-injected gastrocnemius after a short follow-up period but not in the triceps surae or the distal lower limb in individuals with spastic cerebral palsy.
期刊介绍:
American Journal of Physical Medicine & Rehabilitation focuses on the practice, research and educational aspects of physical medicine and rehabilitation. Monthly issues keep physiatrists up-to-date on the optimal functional restoration of patients with disabilities, physical treatment of neuromuscular impairments, the development of new rehabilitative technologies, and the use of electrodiagnostic studies. The Journal publishes cutting-edge basic and clinical research, clinical case reports and in-depth topical reviews of interest to rehabilitation professionals.
Topics include prevention, diagnosis, treatment, and rehabilitation of musculoskeletal conditions, brain injury, spinal cord injury, cardiopulmonary disease, trauma, acute and chronic pain, amputation, prosthetics and orthotics, mobility, gait, and pediatrics as well as areas related to education and administration. Other important areas of interest include cancer rehabilitation, aging, and exercise. The Journal has recently published a series of articles on the topic of outcomes research. This well-established journal is the official scholarly publication of the Association of Academic Physiatrists (AAP).