COMPARISON OF THE ROTATING PLATFORM AND PCL-SUBSTITUTE LCS TOTAL KNEE ARTHROPLASTY: A PROSPECTIVE RANDOMIZED MATCHED-PAIR STUDY
2018
Purpose The purpose of this study is to compare the mid-term outcomes between rotating platform(RP) and posterior cruciate substitute(PS) bearings in LCS-total knee arthroplasty (TKA). Methods This is a prospective randomized matched-pairs case–control study of patients who underwent primary TKAs with a minimum 2 years follow-up. The inclusion criteria was degenerative arthritis, and exclusion criteria was arthritis other than degeneration, previous operations such as osteotomy, body mass index (BMI) over 30 kg/m2. The matching criteria were set as age, BMI, preoperative ROM, gender, and the Knee Society (KS) and Hospital for Special Surgery (HSS) scores. After 1:1 matching, 50 cases involved the LCS RP bearing system as group 1 and 50 cases involved LCS PS bearing system group as group 2. Clinical and radiographic outcomes were evaluated. Results The overall survival was 100% at final follow up. There were no complications between groups, such as infection, dislocation of bearing. The postoperative ROM w...
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