Comparing the Results of High Tibial Open Wedge Osteotomy above and below Tibial Tubercle in Patients with Genovarus Deformity under 20 Degrees

Abstract

Open proximal open osteotomy is one of the most important procedures in the treatment of tibial deformity that is performed to correct varus and improve the symptoms. The purpose of this study was to evaluate the proximal osteotomy results from the above and below tibial tubercles in patients with genovarus deformity under 20 degrees. Methods: In a cross-sectional study, the records of 54 patients with genovarum who were underwent tibial open wedge osteotomy from the above or below of the tibial tubercle, were studied. Patients were examined 4 months after surgery and Q angle and ROM were calculated and TT-TG measured again with CT scan and again filled out the KOOS form. Results: In proximal osteotomy above the tibial tubercle, before and after surgery, Q angle was 13.03±2.75, 14.17±2.63 and ROM, 135.71±11.52 and 134.64±10.35, respectively(P=0.001). In the proximal osteotomy from the below of the tibial tubercle, before and after surgery, Q angle was 13.3±2.78 and 13.61±2.53 (P = 0.38) and ROM, 136.15±9.62 and 134.23±9 (P = 0.07). The difference in KOOS scores in both procedures after surgery was significant (P = 0.001).