Abstract
Thirty-five knees in 25 patients over 65 years of age (average 71 years) with medial osteoarthritis treated by high tibial osteotomy (HTO) were clinically reviewed. Patients were evaluated 5 to 12 years postoperatively (mean, 8.3 years) . Satisfactory results were obtained for 81.2% of the knees at the five-year follow-up evaluation and in 74.3% at the final follow-up evaluation. Only one knee required TKA after 11 years. The femorotibial angle (FTA) at the one-year and final follow-up correlated significantly with clinical results of the final follow-up. FTA at one year after surgery was one of the main factors that influ-enced long-term results. The mean FTA immediately after surgery was 167.1°in patients who subsequently had excellent improvement scores. The change in FTA over time was minimum in patients with an angle corrected to or close to 168°. Clinical results were satisfactory even in those patients over 70 years of age.
