Limited release medial collateral ligament technique

INTRODUCTION: To explore the outcome of selective releasing medial collateral ligament in total knee arthroplasty. HYPOTHESES: Selective releasing technique work for knee balance and clinical results. METHODS: Sixty cases of total knee arthroplasty were studied retrospectively from May,2016 to May 2017.The cases traits were as follows:22 male,38 female,age between 55 years and 83 years,the diagnosis totally OA,pre-operative and varus angle was (13.8±2.5)°,preoperative HSS score 36.5±2.9.All the cases were performed with new technique in which anterior parts of MCL was released limitedly ,posterior-lateral was released about one centimeter beneath joint line,and pie-crusting was used when it was still unbalanced.This was different from the conventional one in which a regular medial soft tissue envelope was performed. RESULTS: Post-operation wound was I stage union.The average follou-up was nine months(6-12 months).The resudial varus angle was (0.8±1.5)°,HSS score was (86.0±3.5),which had significant statistically difference compared with the pre-op one. CONCLUSION: The selectively releasing MCL technique was minimally invasive and easy to learn. Good function was achieved.