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Do orthotic walkers affect knee and hip function during gait?

Jim Richards1, Katherine Payne1, Darren Myatt2

  • 1Allied Health Research Unit, School of Sport Tourism and the Outdoors, University of Central Lancashire, Preston, UK.

Prosthetics and Orthotics International
|September 21, 2014
PubMed
Summary

Orthotic walkers significantly alter knee and hip joint biomechanics compared to standard footwear. Walker A caused greater deviations, potentially increasing knee hyperextension moments, indicating a need for improved walker design for normal gait.

Keywords:
Biomechanicsbiomechanics of prosthetic/orthotic devicesgaitlower limb orthoticsorthotics

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Area of Science:

  • Biomechanics
  • Orthotics
  • Gait Analysis

Background:

  • Previous research on orthotic walkers focused on foot and ankle offloading.
  • Limited understanding exists regarding their impact on lower limb joint mechanics.

Purpose of the Study:

  • To investigate the effects of two orthotic walkers on knee and hip joint biomechanics.
  • To compare these effects against standardized footwear.

Main Methods:

  • 10 healthy participants walked in two different orthotic walkers and standardized footwear.
  • Kinematic and kinetic data were collected using motion analysis and force plates.

Main Results:

  • Significant differences in hip kinematics and knee moments were observed between walkers and footwear.
  • Walker A demonstrated greater kinematic deviations and potentially harmful knee hyperextension moments compared to standardized footwear.

Conclusions:

  • Both orthotic walkers induce significant kinematic and kinetic changes compared to standardized footwear.
  • Walker A may pose risks due to increased knee hyperextension moments.
  • Further research is required to optimize orthotic walker design for more normalized gait patterns.