alexa Tibial osteotomy for the treatment of varus gonarthrosis. Survival and failure analysis to twenty-two years.
Surgery

Surgery

Journal of Trauma & Treatment

Author(s): Sprenger TR, Doerzbacher JF

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Abstract BACKGROUND: The purpose of this retrospective study was to assess the long-term results after the treatment of medial compartment gonarthrosis with a proximal tibial osteotomy to determine whether various clinical and radiographic factors relate to the outcome. METHODS: From 1972 to 1990, seventy-six valgus-producing high tibial osteotomies were performed in sixty-six patients with medial compartment gonarthrosis. Stabilization was achieved with use of a plate on the lateral side of the proximal part of the tibia and a figure-of-eight wire on the medial side. The mean age of the patients at the time of surgery was sixty-nine years, and the mean duration of follow-up was 10.8 years. The factors that were analyzed included postoperative valgus alignment; the age, gender, and weight of the patient; preoperative Ahlb├Ąck radiographic grade; adverse events; Workers' Compensation status; and public liability. Survivorship outcome end points were conversion to arthroplasty, a Hospital for Special Surgery knee score of <70 points, and patient dissatisfaction with the procedure. RESULTS: Ten-year survival, according to the life-table method, was 74\%, 70\%, and 65\% with conversion to arthroplasty, a Hospital for Special Surgery knee score of <70 points, and patient dissatisfaction, respectively, as the end points. Radiographic valgus alignment that ranged between 8 degrees and 16 degrees at one year after the osteotomy had the most significant positive effect on survivorship for all end points (p < 0.01) compared with the other parameters. Complications occurred in sixteen (21\%) of the seventy-six procedures, and they had a significant effect on survival, with all three end points (p < 0.05). CONCLUSIONS: We found that survival at ten years was 90\% (95\% confidence interval, 80\% to 99\%) when the radiographic valgus angle at one year was between 8 degrees and 16 degrees with arthroplasty as the end point. We believe that there is a role for tibial osteotomy, as an alternative to total knee arthroplasty, in patients who are less than sixty years old. LEVEL OF EVIDENCE: Therapeutic study, Level III-2 (retrospective cohort study). See Instructions to Authors for a complete description of levels of evidence.
This article was published in J Bone Joint Surg Am and referenced in Journal of Trauma & Treatment

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