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Related Experiment Video

Updated: Jul 11, 2026

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
08:24

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

Published on: August 30, 2016

Gait changes over time in stance control orthosis users.

Steven E Irby1, Kathie A Bernhardt, Kenton R Kaufman

  • 1Motion Analysis Laboratory, Division of Orthopedic Research, Mayo Clinic, Rochester, Minnesota 55905, USA.

Prosthetics and Orthotics International
|September 14, 2007
PubMed
Summary

This study shows that users of stance control orthoses (SCO), like the Dynamic Knee Brace System (DKBS), improved walking speed and stride length. Kinematic improvements were observed over time, indicating functional gains for KAFO users.

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Area of Science:

  • Orthotics and Biomechanics
  • Gait Analysis
  • Rehabilitation Engineering

Background:

  • Stance control orthoses (SCO) are designed to improve ambulation for individuals with knee instability.
  • Objective motion analysis provides quantitative data on the effectiveness of orthotic devices.

Purpose of the Study:

  • To evaluate the effectiveness of a novel electromechanical SCO, the Dynamic Knee Brace System (DKBS), through objective motion analysis.
  • To compare the functional outcomes of novice and experienced Knee-Ankle-Foot Orthosis (KAFO) users over a 6-month trial.

Main Methods:

  • A 6-month prospective clinical field trial involving 14 SCO users.
  • Objective motion analysis measurements were collected at baseline, 3 months, and 6 months.
  • Participants were categorized as novice (no prior KAFO use) or experienced (prior locked KAFO use).

Main Results:

  • All subjects demonstrated significant increases in peak knee flexion (p=0.02) and a trend towards increased peak hip flexion (p=0.09).
  • Novice SCO users showed significant improvements in walking velocity (p=0.005) and stride length (p=0.008).
  • Experienced KAFO users exhibited a trend towards increased velocity (p=0.06) and significant increases in cadence (p=0.05).

Conclusions:

  • SCO use, specifically the DKBS, leads to significant improvements in temporo-distance gait parameters for KAFO users.
  • While kinematic changes like knee flexion improve, more time may be needed for substantial kinematic adaptations.
  • Objective motion analysis confirms the functional benefits of SCOs in improving ambulation.