Total knee replacement influences both knee and hip joint kinematics during stair climbing

Abstract

A gait analysis system was used to evaluate the kinematics of the hip and knee during stair ascending and descending after operation with total knee replacement. Patients with 5 varus/valgus alignment or less were selected randomly to receive either a flat or a concave tibial component with retention of the posterior cruciate ligament. Patients who had more than 5 varus/valgus alignment and/or an extension defect of 10 or more were selected randomly to receive the concave or posteriorstabilized tibial component with resection of the posterior cruciate ligament. Twenty patients and 17 controls were studied 1-2 years after the operation. Patients had abnormal kinematics during stair ascending and descending. Both knee extension and flexion were reduced. Hip extension tended to decrease, and decreased hip extension moment was noted.

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Hip and knee joint rotations differ between patients with medial and lateral knee osteoarthritis: Gait analysis of 30 patients and 15 controls

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