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Botulinum Toxin Type A Injection for Spastic Equinovarus Foot in Children with Spastic Cerebral Palsy: Effects on Gait and Foot Pressure Distribution

Authors
 Ja Young Choi  ;  Soojin Jung  ;  Dong-wook Rha  ;  Eun Sook Park 
Citation
 YONSEI MEDICAL JOURNAL, Vol.57(2) : 496-504, 2016 
Journal Title
YONSEI MEDICAL JOURNAL
ISSN
 0513-5796 
Issue Date
2016
MeSH
Adolescent ; Ankle Joint ; Botulinum Toxins, Type A/administration & dosage ; Botulinum Toxins, Type A/pharmacology* ; Cerebral Palsy/complications* ; Cerebral Palsy/drug therapy ; Child ; Child, Preschool ; Clubfoot/drug therapy* ; Clubfoot/etiology* ; Clubfoot/physiopathology ; Female ; Foot ; Gait/drug effects* ; Gait/physiology ; Humans ; Injections, Intramuscular ; Male ; Muscle Spasticity/drug therapy ; Muscle, Skeletal/diagnostic imaging ; Neuromuscular Agents/administration & dosage ; Neuromuscular Agents/pharmacology* ; Pressure ; Prospective Studies ; Treatment Outcome ; Weight-Bearing
Keywords
Botulinum toxin type A ; cerebral palsy ; equinovarus deformity
Abstract
PURPOSE: To investigate the effect of intramuscular Botulinum toxin type A (BoNT-A) injection on gait and dynamic foot pressure distribution in children with spastic cerebral palsy (CP) with dynamic equinovarus foot.
MATERIALS AND METHODS: Twenty-five legs of 25 children with CP were investigated in this study. BoNT-A was injected into the gastrocnemius (GCM) and tibialis posterior (TP) muscles under the guidance of ultrasonography. The effects of the toxin were clinically assessed using the modified Ashworth scale (MAS) and modified Tardieu scale (MTS), and a computerized gait analysis and dynamic foot pressure measurements using the F-scan system were also performed before injection and at 1 and 4 months after injection.
RESULTS: Spasticity of the ankle plantar-flexor in both the MAS and MTS was significantly reduced at both 1 and 4 months after injection. On dynamic foot pressure measurements, the center of pressure index and coronal index, which represent the asymmetrical weight-bearing of the medial and lateral columns of the foot, significantly improved at both 1 and 4 months after injection. The dynamic foot pressure index, total contact area, contact length and hind foot contact width all increased at 1 month after injection, suggesting better heel contact. Ankle kinematic data were significantly improved at both 1 and 4 months after injection, and ankle power generation was significantly increased at 4 months after injection compared to baseline data.
CONCLUSION: Using a computerized gait analysis and foot scan, this study revealed significant benefits of BoNT-A injection into the GCM and TP muscles for dynamic equinovarus foot in children with spastic CP.
Files in This Item:
T201600876.pdf Download
DOI
10.3349/ymj.2016.57.2.496
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Rehabilitation Medicine (재활의학교실) > 1. Journal Papers
Yonsei Authors
Rha, Dong Wook(나동욱) ORCID logo https://orcid.org/0000-0002-7153-4937
Park, Eun Sook(박은숙) ORCID logo https://orcid.org/0000-0002-9144-3063
Choi, Ja Young(최자영)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/146556
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