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The Lower Body Positive Pressure Treadmill for Knee Osteoarthritis Rehabilitation
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Published on: July 22, 2019

Gait analysis after bi-compartmental knee replacement.

He Wang1, Eric Dugan, Jeff Frame

  • 1Biomechanics Laboratory, School of Physical Education, Sport, and Exercise Science, Ball State University Muncie, IN 47306, USA. hwang2@bsu.edu

Clinical Biomechanics (Bristol, Avon)
|August 22, 2009
PubMed
Summary

Bi-compartmental knee replacement patients show good knee mechanics during walking. While some compensatory patterns exist, overall gait and strength are comparable to healthy individuals after surgery.

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Area of Science:

  • Orthopedics
  • Biomechanics
  • Gait Analysis

Background:

  • Knee osteoarthritis frequently affects medial and patellofemoral compartments.
  • Bi-compartmental knee replacement addresses osteoarthritis in these specific knee compartments.
  • Limited data exists on knee mechanics post-bi-compartmental knee replacement during gait.

Purpose of the Study:

  • To evaluate knee strength after bi-compartmental knee replacement.
  • To assess knee mechanics during level walking post-bi-compartmental knee replacement.

Main Methods:

  • Compared 8 patients with bi-compartmental knee replacement to 10 healthy controls.
  • Measured maximal isokinetic concentric knee extension strength.
  • Utilized 3D kinematic and kinetic analyses for level walking gait evaluation.

Main Results:

  • Surgical knees showed reduced peak torque and initial abduction moment compared to non-involved and control limbs.
  • Non-involved limbs demonstrated altered knee extension and greater extensor moment during push-off.
  • Most other knee mechanics during walking were similar across surgical, non-involved, and control limbs.

Conclusions:

  • Bi-compartmental knee replacement patients exhibit normal frontal plane knee mechanics.
  • Knee extensor strength in patients is comparable to healthy controls during walking.
  • Despite compensatory patterns, gait and knee mechanics are largely normalized post-bi-compartmental knee replacement.