The associations between quadriceps muscle strength, power, and knee joint mechanics in knee osteoarthritis: A cross-sectional study

Clinical Biomechanics
Amanda M MurrayMichael A Tevald

Abstract

Abnormal knee joint mechanics have been implicated in the pathogenesis and progression of knee osteoarthritis. Deficits in muscle function (i.e., strength and power) may contribute to abnormal knee joint loading. The associations between quadriceps strength, power and knee joint mechanics remain unclear in knee osteoarthritis. Three-dimensional motion analysis was used to collect peak knee joint angles and moments during the first 50% of stance phase of gait in 33 participants with knee osteoarthritis. Quadriceps strength and power were assessed using a knee extension machine. Strength was quantified as the one repetition maximum. Power was quantified as the peak power produced at 40-90% of the one repetition maximum. Quadriceps strength accounted for 15% of the variance in peak knee flexion angle (P=0.016). Quadriceps power accounted for 20-29% of the variance in peak knee flexion angle (P<0.05). Quadriceps power at 90% of one repetition maximum accounted for 9% of the variance in peak knee adduction moment (P=0.05). These data suggest that quadriceps power explains more variance in knee flexion angle and knee adduction moment during gait in knee osteoarthritis than quadriceps strength. Additionally, quadriceps power at multip...Continue Reading

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Citations

Oct 11, 2017·Medicine and Science in Sports and Exercise·Derek N PamukoffMichael N Vakula
Oct 11, 2017·Medicine and Science in Sports and Exercise·Hyunsoo KimJ Ty Hopkins
Jan 19, 2018·Exercise and Sport Sciences Reviews·Katherine A Boyer
Jan 20, 2018·Rheumatology·Priathashini KrishnasamySarah R Robbins
Jan 11, 2019·Medicine and Science in Sports and Exercise·Michael N VakulaDerek N Pamukoff
Oct 28, 2019·Calcified Tissue International·C ShereK A Ward
Aug 7, 2020·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Troy BlackburnChris D Johnston
Jan 19, 2019·Advances in Rheumatology·Deborah Hebling SpinosoMarcelo Tavella Navega
Apr 19, 2021·PM & R : the Journal of Injury, Function, and Rehabilitation·Lindsay SlaterLevi J Hargrove

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