Poster 333: Outcomes of Anterior Closing Wedge High Tibial Osteotomy in Patients Undergoing ACL Revision Reconstruction

Objectives: Graft failure rates following anterior cruciate ligament (ACL) reconstruction have been reported up to 30%. According the literature, one anatomic variant linked graft reinjury is a high posterior tibial slope. As result, surgeons are exploring effectiveness of slope reducing osteotomy (HTO) reduce subsequent risk. While cadaveric models indicate that this procedure decreases forces across ACL graft, there limited evidence demonstrating its efficacy in clinical trials. Therefore, purpose study was compare self-reported patient outcomes between patients undergoing revision surgery with (ACL+HTO) and matched controls without HTO. We hypothesized ACL+HTO would exhibit similar low rate when compared their counterparts. Methods: A retrospective matched-case control conducted for from 2018 2021, utilizing single surgeon database (n = 1,781). Patients HTO group were included if they at least year out surgical osteotomy. excluded had primary or no concomitant an age, gender, setting-matched reconstruction. Descriptive demographic data obtained, including pre/postoperative (o) group. Complications injury surveillance throughout postoperative follow-up period. Primary outcome measures Single Assessment Numeric Scale (SANE), 24 months. Secondary return sport level, complications (infection, loss motion, deep vein thrombosis, etc). Generalized linear using parametric nonparametric equivalents baseline groups a-priori alpha level .05. Results: From 364 reconstructions, 9 met inclusion criteria (Table 1). This gender 30 Baseline comparisons revealed weighed more than experimental (198.2 ±26.4 vs 183.7 ±21.7, P <.001), however all other not statistically different. The mean pre op 19.2o ±4.1o 7.7o ±2.3o (mean diff: -11.5o, <.001). Mean time 1.82 ±0.3 years. At follow-up, statistical differences knee function (SANE score), rate, sport, 2). There reinjuries group, approximately 85.8% returned some sporting activity 42% returning I II cutting pivoting sport. Conclusions: Preliminary provided current suggests setting large deformities effective correcting malalignment avoiding 2 also holds promise allow majority various levels activities. To our knowledge, first comparative comparing intermediate subpopulation cohort. these do provide ongoing investigation, it important note pilot underpowered we strongly recommend performance larger trials confirm results. [Table: see text][Table: text]