Effect of posterior condylar offset in post operative range of motion in cruciate retaining and sacrificing TKR: A comparative analysis.

Journal of Orthopaedics
Goutham D V GouthamRajendra Kumar Arya

Abstract

Restoration of posterior condylar offset (PCO) during TKA is believed to be an important to improve knee kinematics, maximizing range of motion (ROM) and minimizing flexion instability. The aim of prospective study was to find out the role of PCO in post-operative ROM after cruciate retaining (CR) and cruciate sacrificing (CS) TKA. A total of 90 patients were divided into the CR knee group (49) and CS knee Group (41) intra-operatively by the surgeon based on the status of Posterior Cruciate Ligament. Preoperative and postoperative PCO was evaluated on true lateral knee radiographs. The ROM was measured pre operatively and post operatively at 4 weeks, 8 weeks, 3 months, 1 year and 2 years. Appropriate statistical tests were used and results were interpreted. The mean flexion angle was 113.86° in CR knees and 118.29° in CS knees with a significantly greater improvement observed for the latter group. Preoperative mean PCO was 35.08 mm in CR knees and 36.37 mm in CS knees, while the corresponding values post operatively were 32.74 mm and 34.88 mm respectively, at follow-up. In order to evaluate the relationship between change of PCO and postoperative improvement in range of flexion, we divided the patients into three sub groups acc...Continue Reading

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