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Top Stroke Rehabil. 2009 Sep-Oct;16(5):367-76. doi: 10.1310/tsr1605-367.

Gait changes following botulinum toxin A treatment in stroke.

Author information

1
Motor Performance Laboratory, School of Rehabilitation Therapy, Queen's University, Kingston, Ontario, Canada.

Abstract

PURPOSE:

To characterize the effects of botulinum toxin A treatment of spastic plantar flexors in stroke on joint mobility and gait kinematics and kinetics.

METHOD:

Nine patients with hemiparetic stroke presenting with ankle hypertonicity participated in this exploratory open-label case series study. Comprehensive gait analysis provided bilateral kinematic and kinetic information for the ankle, knee, and hip joints throughout the stance phase. Data were obtained at baseline, 2 weeks, and 10 weeks post botulinum toxin injection of the spastic plantar flexors.

RESULTS:

Passive ankle range of motion increased post injection (p < .05). The amount of plantarflexion in late stance was significantly reduced (p < .05) while the maximum dorsiflexion increased in midstance at 10 weeks post treatment. The angular displacement profiles for the knee revealed that patients tended to display less hyperextension following treatment (p = .053). No significant changes in kinetic measures were found; however, case-by-case observations suggested that most patients experienced improvements in positive work production.

CONCLUSIONS:

The findings indicate that botulinum toxin treatment results in improved joint mobility and ankle kinematics and, in some patients, increases in positive work, suggesting better gait performance.

PMID:
19903655
DOI:
10.1310/tsr1605-367
[Indexed for MEDLINE]
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