Abstract

The purpose of this study was to identify temporal gait parameters in coxarthrosis.In this report, gait analysis was performed on 20 patients (all females; mean age 61.2 years) who had total hip arthroplasty from May to September 2004.All patients were tested during "free" walking along an 5-m walkway in which a ground reaction force plate (gait scan 8000; Nitta, Inc.) was installed. Normal average values reported by Murray et al.2 ) were used. As an index of pain, the Japanese Orthopaedic Association (JOA) pain score was used.Single support duration was compared with the involved and normal legs. Single support duration of the involved leg decreased in 19 patients. Moreover, compared with normal values, in the normal leg, those of most patients remained unchanged. In the involved leg, single support duration of all patients decreased from the normal value. Single support duration of the involved leg decreased as JOA pain score decreased. Double support duration of both legs increased as JOA pain score decreased. The results of gait analysis can be used as an objective index of hip pain.

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