Osteotomía varizante distal de fémur: resultados a medio plazo, complicaciones y tasa de conversión a prótesis total de rodilla

Objective

To evaluate the clinical results, complications, and conversions to total knee replacement after distal femoral varus osteotomy.

Material and methods

A total of 36 patients with a mean age of 49 years were evaluated according to the Hospital Special Surgery (HSS) scale. Osteotomy failure was considered if conversion to total knee replacement was required, or when a clinical assessment below 70 was obtained. In all cases, a steel Puddu plate was used with iliac crest allograft support.

Results

The mean follow-up was 55 months, with an initial valgus alignment of 10.3^o. The final mean angulation was –0.3^o (varus), and the mean correction was 9.97^o. One patient required a total knee replacement. The survival of the osteotomies was 100% at 5 years, and 83.3% at 10 years. A score of 83.2 was obtained on the HSS scale. The osteosynthesis material had to be removed in three patients. One case failed and required a conversion to total arthroplasty.

Conclusions

The use of this technique for the correction of misalignments, its low rate of complications, and its good clinical outcomes makes distal femoral varus osteotomy an effective treatment for patients with symptomatic genu valgum.