Ankle-foot orthosis function in low-level myelomeningocele.

Hullin, M G; Robb, J E; Loudon, I R · J Pediatr Orthop · 1992

case_series · Level IV

Where this comes from

Abstract

Six children with low-level myelomeningocele underwent gait analysis. All showed excessive ankle dorsiflexion and knee flexion when walking barefoot. A rigid thermoplastic ankle-foot orthosis (AFO) improved gait by preventing ankle dorsiflexion and reducing knee flexion. Biomechanically, the AFO caused a reduction in external knee moment by aligning the knee with the ground reaction force. Small changes in the foot-shank angle of the orthosis had profound effects on knee mechanics. Knee hyperextension could be controlled by a rocker sole. Kinetic gait analysis permits understanding of the biomechanical effects of orthoses.

Medical subject headings

Anatomy