The Influence of Botulinum Toxin A Injections into the Calf Muscles on Genu Recurvatum in Children With Cerebral Palsy

被引:15
作者
Klotz, Matthias C. M. [1 ]
Wolf, Sebastian I. [1 ]
Heitzmann, Daniel [1 ]
Gantz, Simone [1 ]
Braatz, Frank [1 ]
Dreher, Thomas [1 ]
机构
[1] Heidelberg Univ Clin, Dept Orthopaed & Trauma Surg, D-69118 Heidelberg, Germany
关键词
ANKLE PLANTAR FLEXORS; EQUINUS DEFORMITY; SPASTIC EQUINUS; GAIT; GASTROCNEMIUS; PROGRESSION; MANAGEMENT; SUPPORT; PART; DIPLEGIA;
D O I
10.1007/s11999-013-2897-7
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
With cerebral palsy (CP), an equinus deformity may lead to genu recurvatum. Botulinum toxin A (BtA) injection into the calf muscles is a well-accepted treatment for dynamic equinus deformity. The purpose of this study was to determine whether BtA injections into the calf muscles to decrease equinus would decrease coexisting genu recurvatum in children with diplegic CP. In a retrospective study, 13 children (mean age, 5 years) with spastic diplegic CP showing equinus and coexisting primary genu recurvatum, who were treated with BtA injections into the calf muscles, were included. Evaluations were done before and 6 and 18 weeks after intervention using three-dimensional gait analysis and clinical examinations according to a standardized protocol. Basic statistical analyses (power analysis, ANOVA) were performed to compare genu recurvatum before treatment and at 6 and 18 weeks after injection with BtA. During stance phase, maximum ankle dorsiflexion was increased substantially from -3.0A degrees A A +/- A 14.3A degrees before to 6.2A degrees A A +/- A 14.2A degrees 6 weeks after the injections. Despite this, with the numbers available, the amount of recurvatum in stance did not improve with treatment at either 6 or 18 weeks. There was significant improvement of knee hyperextension during stance phase of 6.2A degrees between baseline and 18 weeks after BtA injection, but a genu recurvatum was still present in most patients. Despite improvement of ankle dorsiflexion after injection with BtA, genu recurvatum did not show relevant improvement at 6 or 18 weeks after injection with the numbers available. Because knee hyperextension remained in most patients, other factors leading to genu recurvatum should be taken into consideration. In addition, a botulinum toxin-induced weakness of the gastrocnemius may explain why recurvatum gait was not significantly reduced. Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.
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页码:2327 / 2332
页数:6
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