Osteoarthritis Research Today is a free monthly online journal that collates and summarizes the latest research about Osteoarthritis, including details on treatment, symptoms, causes, medication.

Early results of high-flex total knee arthroplasty: comparison study at 1 year after surgery.

Bin SI, Nam TS

Department of Orthopedic Surgery, University of Ulsan, College of Medicine, Asan Medical Center, 388-1, Poongnap-2dong, Songpa-gu, Seoul, 138-736, South Korea. sibin@amc.seoul.kr

We compared clinical [including maximal flexion and range of motion (ROM)] and radiographical outcomes of high-flex versus conventional implants for total knee arthroplasty (TKA) after 1 year. We also analyzed the factors affecting postoperative ROM in high-flex implants. The high-flex group (n=90) had an average maximal flexion of 129.8 degrees (standard deviation (SD), 5.2 degrees ) significantly higher than the 124.3 degrees (SD, 9.2 degrees ) of the conventional group (n=90), especially for patients with less than 90 degrees of knee flexion (P<0.05). There was no significant difference in hospital for special surgery (HSS) score between the two groups. No knee developed osteolysis, aseptic loosening, or other complications. We found that, for high-flex implants, preoperative ROM had a significant effect on postoperative ROM.

Published 3 April 2007 in Knee Surg Sports Traumatol Arthrosc, 15(4): 350-5.
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