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Analysis of knee-joint forces during flexed-knee stance
Home
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Analysis of knee-joint forces during flexed-knee stance
Analysis of knee-joint forces during flexed-knee stance
JP
J Perry
J Perry
DA
D Antonelli
D Antonelli
WF
W Ford
W Ford
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1 October 1975
journal article
Published by
Wolters Kluwer Health
in
The Journal of Bone & Joint Surgery
Vol. 57
(7)
,
961-967
https://doi.org/10.2106/00004623-197557070-00014
Abstract
Ee was 75 per cent of the load on the femoral head at 15 degrees of knee flexion, 210 per cent at 30 degrees, and 410 per cent at 60 degrees. Stresses at the tibiofemoral and patellofemoral joint surfaces increased in similar fashion. The quadriceps force was equivalent to 20 per cent of average maximum quadriceps strength at 15 degrees and to 50 per cent at 30 degrees, as determined from torque tests on five normal subjects. Using an instrumented cadaver lower extremity, the forces in the quadriceps, patella, and tibia during flexed-knee stance were measured and the calculated and experimental data were found to correlate with an average discrepancy of 6 per cent. The quadriceps force required to stabilize the knee was 75 per cent of the load on the femoral head at 15 degrees of knee flexion, 210 per cent at 30 degrees, and 410 per cent at 60 degrees. Stresses at the tibiofemoral and patellofemoral joint surfaces increased in similar fashion. The quadriceps force was equivalent to 20 per cent of average maximum quadriceps strength at 15 degrees and to 50 per cent at 30 degrees, as determined from torque tests on five normal subjects. Copyright © 1975 by The Journal of Bone and Joint Surgery, Incorporated...
Keywords
EXPERIMENTAL
KNEE
JOINT
EXTREMITY
FORCES
QUADRICEPS
STRESSES
STANCE
STABILIZE
FLEXED
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Open Access
Cited by 175 articles