Thomas R Sprenger1, Jeff F Doerzbacher. 1. Blake Medical Center and Manatee Memorial Hospital, Bradenton, Florida 34209, USA. tomsprenger@attglobal.net
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 Ahlbäck 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.
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 Ahlbäck 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.
Authors: Gunter Spahn; Gunther O Hofmann; Lars Victor von Engelhardt; Mengxia Li; Henning Neubauer; Hans Michael Klinger Journal: Knee Surg Sports Traumatol Arthrosc Date: 2011-11-11 Impact factor: 4.342
Authors: Matthias J Feucht; Craig S Mauro; Peter U Brucker; Andreas B Imhoff; Stefan Hinterwimmer Journal: Knee Surg Sports Traumatol Arthrosc Date: 2012-03-07 Impact factor: 4.342
Authors: A H Gomoll; G Filardo; F K Almqvist; W D Bugbee; M Jelic; J C Monllau; G Puddu; W G Rodkey; P Verdonk; R Verdonk; S Zaffagnini; M Marcacci Journal: Knee Surg Sports Traumatol Arthrosc Date: 2011-11-09 Impact factor: 4.342