Gait Analysis before and after Total Hip Arthroplasty

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  • 人工股関節全置換術後の歩行の検討

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In 132 patients (mean age 61.1 years) with unilateral hip disease who underwent total hip arthroplasty (THA) from March 2003 to July 2004, gait was analyzed preoperatively and six months after unilateral THA. All patients were tested during "free" walking along a 5-m walkway in which a ground reaction force plate (gait scan 8000; Nitta, Inc.) was installed. The assessed parameters were single and double support duration, cadence, gait speed, and differences between the two legs in single support duration.<BR>The assessed parameters improved significantly after surgery. There were some patients in whom differences between the two legs in single support duration were still observed at six months. Differences between the two legs in single support duration were correlated with the age and preoperative limb length discrepancy at six months after surgery. Multivariate analysis showed that clinical data associated with differences between the two legs in single support duration was preoperative limb length discrepancy (p=0.001).<BR>The results indicate that the preoperative limb length discrepancy affects characterization of the functional restitution of patients after surgery.

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