Journal article

Varus-Valgus Laxity and Passive Stiffness in Medial Knee Osteoarthritis

Mark W Creaby, Tim V Wrigley, Boon Whatt Lim, Kelly-Ann Bowles, Ben R Metcalf, Rana S Hinman, Kim L Bennell

ARTHRITIS CARE & RESEARCH | WILEY | Published : 2010

Abstract

OBJECTIVE: To compare differences in knee varus and valgus angular laxity and passive mechanical stiffness between asymptomatic knees and those with mild, moderate, and severe knee osteoarthritis (OA). METHODS: A total of 127 participants with symptomatic medial tibiofemoral OA and 32 asymptomatic controls participated. OA knees were stratified according to radiographic severity. Varus-valgus laxity was evaluated using a customized dynamometer, providing continuous measurement of varus-valgus joint angle and torque. The following indices were calculated: 1) varus, valgus, and total angular laxity, 2) end-range varus and valgus stiffness, and 3) midrange stiffness. RESULTS: There was no diffe..

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