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This study compares in vivo sagittal plane kinematics of the Oxford mobile-bearing unicompartmental knee arthroplasty (UKA) at 1 and 10 years' postsurgery (10 knees) with a fixed-bearing total knee arthroplasty (TKA) (5 knees) and the normal knee (5 knees), using dynamic fluoroscopic measurement of the patellar tendon angle. The Oxford UKA preserved normal changes in patellar tendon angle with flexion, and this was maintained at 10 years. In contrast, an abnormal pattern was seen with the TKA. The results suggest that a normal pattern of sagittal plane knee kinematics exists following Oxford medial UKA and imply that anterior cruciate ligament function is maintained in the long term.

Type

Journal article

Journal

J Arthroplasty

Publication Date

08/2004

Volume

19

Pages

590 - 597

Keywords

Adult, Aged, Analysis of Variance, Arthroplasty, Replacement, Knee, Biomechanical Phenomena, Fluoroscopy, Follow-Up Studies, Humans, Knee Joint, Middle Aged, Range of Motion, Articular, Tendons, Time Factors, Video Recording