The effect of floor reaction ankle foot orthosis on postural control in children with spastic cerebral palsy

Prosthet Orthot Int. 2012 Mar;36(1):71-6. doi: 10.1177/0309364611429855. Epub 2011 Nov 30.

Abstract

Background: Children with cerebral palsy (CP) often demonstrate postural control difficulties. Orthotic management may assist in improving postural control in these children.

Objective: The purpose of this investigation was to examine the influence of floor reaction ankle foot orthosis (FRAFO) on postural flexion called the crouch position in children with CP.

Study design: Quasi-experimental.

Methods: Eight children with spastic diplegic CP and eight matched typically developing children participated in this study. Postural control of children with CP was assessed in a static standing position on a force platform with/without a FRAFO. The parameters used were centre of pressure (CoP) measures, calculated from force platform signals including the standard deviation (SD) of excursion; phase plate portrait and SD of velocity in anteroposterior (AP) and mediolateral (ML) directions.

Results: The maximum knee extension was statistically significant in children with CP when barefoot compared to wearing braced footwear (p < 0.05, t = 10.01). AP and ML displacement, AP velocity and AP phase plate portrait of CoP were not statistically significant between children with CP with/without a FRAFO (p < 0.05).

Conclusion: FRAFO can improve the alignment of the knee, but may not be helpful in improving postural control in children with CP in a short time period.

MeSH terms

  • Ankle Joint / physiology*
  • Biomechanical Phenomena
  • Bone Malalignment / prevention & control
  • Braces
  • Case-Control Studies
  • Cerebral Palsy / physiopathology*
  • Cerebral Palsy / therapy*
  • Child
  • Female
  • Floors and Floorcoverings
  • Foot / physiology*
  • Humans
  • Knee Joint / physiology
  • Male
  • Orthotic Devices*
  • Posture / physiology*
  • Range of Motion, Articular / physiology
  • Walking / physiology*