Osteoarthritis (OA) of the knee affects an estimated 20–40% of individuals over the age of 65 [1], and is nearly 10 times more common in the medial compartment than the lateral compartment [2]. Many studies have reported the effectiveness of footwear modifications using laterally-wedged insoles [3,4] and more recently, variable-stiffness soles [5] in reducing the adduction moment at the knee in patients with medial compartment knee OA. The adduction moment is known to be associated with the progression [6] and treatment outcome [7] of medial compartment knee OA, and has been shown to be correlated with medial compartment joint loading [8]. However, the exact changes in medial compartment joint loading in vivo with the variable-stiffness shoe remain unknown. The development of an instrumented total knee implant which has the ability to directly measure tibial forces, and can differentiate between medial and lateral joint loads in vivo during walking [9], allows the testing of changes in the medial compartment loading with an intervention shoe.
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ASME 2009 Summer Bioengineering Conference
June 17–21, 2009
Lake Tahoe, California, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-4891-3
PROCEEDINGS PAPER
Reduction in the Medial Compartment Force Correlates With the Reduction in Knee Adduction Moment Using a Variable-Stiffness Shoe With an Instrumented Knee
Jennifer C. Erhart,
Jennifer C. Erhart
Stanford University, Stanford, CA
VA Palo Alto Health Care System, Palo Alto, CA
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Chris Dyrby,
Chris Dyrby
Stanford University, Stanford, CA
VA Palo Alto Health Care System, Palo Alto, CA
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Darryl D. D’Lima,
Darryl D. D’Lima
Shiley Center for Orthopaedic Research & Education at Scripps Clinic, La Jolla, CA
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Clifford W. Colwell, Jr.,
Clifford W. Colwell, Jr.
Shiley Center for Orthopaedic Research & Education at Scripps Clinic, La Jolla, CA
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Thomas P. Andriacchi
Thomas P. Andriacchi
Stanford University, Stanford, CA
VA Palo Alto Health Care System, Palo Alto, CA
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Jennifer C. Erhart
Stanford University, Stanford, CA
VA Palo Alto Health Care System, Palo Alto, CA
Chris Dyrby
Stanford University, Stanford, CA
VA Palo Alto Health Care System, Palo Alto, CA
Darryl D. D’Lima
Shiley Center for Orthopaedic Research & Education at Scripps Clinic, La Jolla, CA
Clifford W. Colwell, Jr.
Shiley Center for Orthopaedic Research & Education at Scripps Clinic, La Jolla, CA
Thomas P. Andriacchi
Stanford University, Stanford, CA
VA Palo Alto Health Care System, Palo Alto, CA
Paper No:
SBC2009-204605, pp. 937-938; 2 pages
Published Online:
July 19, 2013
Citation
Erhart, JC, Dyrby, C, D’Lima, DD, Colwell, CW, Jr., & Andriacchi, TP. "Reduction in the Medial Compartment Force Correlates With the Reduction in Knee Adduction Moment Using a Variable-Stiffness Shoe With an Instrumented Knee." Proceedings of the ASME 2009 Summer Bioengineering Conference. ASME 2009 Summer Bioengineering Conference, Parts A and B. Lake Tahoe, California, USA. June 17–21, 2009. pp. 937-938. ASME. https://doi.org/10.1115/SBC2009-204605
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