alexa Reduced muscle function in patients with osteoarthritis.
Orthopaedics

Orthopaedics

Journal of Arthritis

Author(s): Fisher NM, Pendergast DR

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Abstract The purpose of this study was to determine whether subjects with knee osteoarthritis (OA) had reduced muscle strength at various muscle lengths, endurance, contraction velocity and functional capacity, compared with control subjects and whether the decrease was related to functional capacity. Forty-five men and 45 women with knee OA were compared with a control group (41 males, 63 females) of similar age for functional capacity, maximal isometric strength (in vivo length-tension relationship) and endurance (in vivo force-time relationship) of knee flexion and extension and maximal angular velocity (in vivo force-velocity relationship) of knee extension. The OA subjects had increased difficulty (2.03 +/- 0.53) and pain (1.65 +/- 0.29) for activities of daily living (ADLs) and significantly lower strength for extension (72\%) and flexion (56\%), endurance for the quadriceps (203\%) and hamstrings (214\%) and velocity (128\%). The reductions were greater at longer muscle lengths. These data demonstrate that patients with knee OA have reduced muscle function and functional capacity compared to controls.
This article was published in Scand J Rehabil Med and referenced in Journal of Arthritis

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