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Botulinum Toxin-A in Children With Congenital Spastic Hemiplegia Does Not Improve Upper Extremity Motor-Related Function Over Rehabilitation Alone: A Randomized Controlled Trial

Avans+, University for Professionals, Breda The Netherlands, eaa.rameckers{at}hetnet.nl, University Hospital Maastricht, azM, Maastricht, Sint Maartenskliniek RDE, Nijmegen, Rehabilitation Foundation Limburg, SRL, Franciscusoord, Valkenburg

L.A.W.M. Speth, MD

University Hospital Maastricht, azM, Maastricht, Rehabilitation Foundation Limburg, SRL, Franciscusoord, Valkenburg

J. Duysens, PhD

Avans+, University for Professionals, Breda The Netherlands, Sint Maartenskliniek RDE, Nijmegen

J.S.H. Vles, MD, PhD

University Hospital Maastricht, azM, Maastricht

B.C.M. Smits-Engelsman, PhD

Avans+, University for Professionals, Breda The Netherlands, Motor Control and Neuroplasticity, Department of Biomedical Kinesiology, K. U. Leuven, Belgium, Sint Maartenskliniek RDE, Nijmegen

Background. Rehabilitation of the upper extremity in children with hemiplegic cerebral palsy has not been compared to the same intensity of therapy combined with injected botulinum toxin (BTX). Objective. To measure the short-term (2 weeks) and long-term (6 and 9 months) effects of a standardized functional training program versus without the addition of chemodenervation of forearm and hand muscles. Methods. Twenty children with spastic hemiplegia, aged 4 to 16 years, were matched for baseline characteristics and then randomized to standardized functional physical and occupational therapies for 6 months (PT/OT group) or to the same therapies plus multimuscle BTX-A (BTX+ group). Main outcome measures were isometric generated force, overshoot and undershoot (force production error), active and passive range of motion by goniometry (ROM), stretch restricted angle (SRA) of joints, Ashworth scores at the elbow and wrist, and the Melbourne assessment of unilateral upper limb function. All measures were performed at baseline, 2 weeks after BTX-A, 6 months (end of therapy), and then 3 months after termination of the therapy. Results. Clinical measures (muscle tone, active ROM of wrist and elbow) showed improvement in both groups. However, no significant differences emerged between groups on functional measures. Generated force decreased directly after the BTX-A injection but increased during the therapy period. The PT/OT group, however, showed a significantly higher increase in force and accuracy with therapy compared with the BTX+ therapy group. Conclusions. Functional rehabilitation therapies for the upper extremity increase manual isometric flexor force at the wrist and ROM, but BTX injections cause weakness and do not lead to better outcomes than therapy alone.

Key Words: Cerebral palsy • Isometric force • Force regulation • Spasticity • Upper limb • Physiotherapy • Occupational therapy • Botulinum toxin-A • Randomized clinical trial

This version was published on March 1, 2009

Neurorehabilitation and Neural Repair, Vol. 23, No. 3, 218-225 (2009)
DOI: 10.1177/1545968308326629


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