Grassi A, et al. - Investigators examined 43 candidates to evaluate the knee anatomical parameters of cases with failed anterior cruciate ligament reconstruction (ACL-R) vs control group with successful ACL-R. They recorded variations in lateral and medial posterior tibial slopes, anterior subluxation of the lateral and medial tibial plateau, medial tibial plateau width, lateral tibial plateau width, medial femoral condyle width, and transepicondylar distance between the 2 groups. They noted significant independent predictors like lateral posterior tibial slope (LTPs), the anterior subluxation of the medial tibial plateau, and the medial femoral condyle width. But, LTPs >7.4° was reported as the most reliable predictor of ACL failure with a sensitivity of 88% and specificity of 84%. Hence, they suggested the candidates with LTPs >7.4° at high risk of ACL-R failure.