No differences in clinical outcomes and cartilage repair between opening wedge and closed wedge high tibial osteotomies at short-term follow-up: A retrospective case series analysis

Purpose: The aim of this study was to assess differences in clinical outcomes and postoperative cartilage repair between opening wedge high tibial osteotomy (OWHTO) closed HTO (CWHTO) for medial osteoarthritis (OA) the knee. Methods: A total 90 knees 76 patients who underwent OWHTO (45 40 patients) CWHTO 36 followed-up 2 years. Cartilage at compartment arthroscopically classified into following stages: Stage 1 (no reparative change); (partial coverage with white cartilaginous tissue); 3 (full tissue). Clinical were assessed using Knee Society scores, radiographic assessment carried out by anatomical femorotibial angle (aFTA). Results: Regarding preoperative OA grade, varus alignment, function score, showed more advanced status than patients. scores significantly improved after surgery both procedures (P < 0.05), no significant difference two procedures. stage or found 80% subjects femoral condyle 60% condyle. However, there Multivariate logistic regression analysis that International Repair (ICRS) grade only factor affecting repair. Conclusions: as much OWHTO. Although effects on are unknown, is an effective treatment option even severe