Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (17): 3109-3112.doi: 10.3969/j.issn.1673-8225.2011.17.017

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Biomechanical changes of the knee with the valgus bracing in people with medial knee osteoarthritis

Zhang Min, Jiang Lan   

  1. Division of Outpatient, Department of Rehabilitation Medicine, Six People’s Hospital of Shanghai Jiao Tong University, Shanghai  200233, China
  • Received:2010-10-25 Revised:2010-12-16 Online:2011-04-23 Published:2011-04-23
  • Contact: Jiang Lan, Technician-in-charge, Division of Outpatient, Department of Rehabilitation Medicine, Six People’s Hospital of Shanghai Jiao Tong University, Shanghai 200233, China
  • About author:Zhang Min★, Master, Technician, Division of Outpatient, Department of Rehabilitation Medicine, Six People’s Hospital of Shanghai Jiao Tong University, Shanghai 200233, China zm_602@sina.com

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Abstract:

BACKGROUND: Unloading valgus knee brace has been proved to be a very effective method which can help patients in medial knee osteoarthritis, but the kinematic and kinetic changes at knee joint after taking knee brace was not clear.
OBJECTIVE: To investigate the kinematics and kinetics changes of the medial knee osteoarthritis at knee during walking with and without unloading valgus knee brace which is benefit for designing new type of knee brace in the future.
METHODS: Totally 20 patients with medial knee osteoarthritis were included in this test kinematics changes were conducted with three dimensional gait analysis system and the kinetics changes were collected by the force platforms for medial knee osteoarthritis subjects with or without valgus knee brace.
RESULTS AND CONCLUSION: Patients with valgus knee brace showed smaller knee adduction moment during walking when compared to the no brace condition and an increased knee valgus and decreased knee varus angles were found at same time(P < 0.05), there were no significant changes in temporal-spatial parameters and peak knee flexion degrees during walking. Using unloading valgus knee brace was an effective method to reduce the loading in the medial compartment by increasing knee valgus degrees and decreasing knee varus degrees during walking and the abnormal mechanical alignment of the knee was corrected at the same time.

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