Does high XXXX affect the success or survival of a total knee replacement?

@entity1 @entity158 @entity4957
BACKGROUND: Whether a previous high @entity4957 (HTO) influences the long-term function or survival of a total knee arthroplasty (TKA) is controversial. QUESTIONS/PURPOSES: We compared long-term functional scores and survival of bilateral TKAs in @entity1 who had a previous HTO in one of the knees. @entity1 AND METHODS: From 1980 to 1995, we performed 5043 primary TKAs; 39 of these @entity1 had bilateral TKAs at an average of 8.7 years after unilateral HTO. Surgery was simultaneous in 32 @entity1 and staged in seven. There were 12 @entity1 and 27 @entity1 with an average age of 66.9 years at the time of surgery. At last followup, 19 of the 39 @entity1 were living and had been reevaluated since our previous study. We determined function with Knee Society scores. The length of followup for @entity1 who had HTOs averaged 14 years (range, 3-21 years); for @entity1 without HTOs, the average followup was 13.9 years (range, 3-22 years). RESULTS: We observed no differences in Knee Society function and radiographic and @entity158 scores between the knees without and with previous HTO. Terminal extension and flexion, arc of motion, and knee alignment were similar between the knees. There were no femorotibial revisions in either group of knees. Survival at 15 years was 100% for knees without previous HTO and 97% for knees with previous HTO. CONCLUSIONS: Our observations suggest a previous high @entity4957 does not influence the function or survival of a knee long term. LEVEL OF EVIDENCE: Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.
