Modified Arthroscopic Repair of a Posterior Cruciate Ligament Tibial Avulsion Fracture Improves IKDC and Lysholm Score Compared to Open Reduction

The purpose of this study was to analyse the difference between arthroscopic fixation and open reduction internal fixation (ORIF) of posterior cruciate ligament (PCL) tibial avulsion fractures. This retrospective study analysed patients with an acute PCL tibial avulsion fracture who underwent surgical treatment at our hospital and follow-up for at least 24 months. Variables based on sex, age, Meyers–McKeever type, surgical method, meniscus tear, external fixation, labour or sports, Lysholm knee score, IKDC score, and KT-1000 value were also recorded. Multifactor unconditional logistic regression and Student’s t test with 1:1 propensity score matching (PSM) to remove confounding factors were used for analysis. Sixty-five cases achieved knee function graded as “good” or better, and 9 cases not. Single-factor analysis indicated that Meyers–McKeever type (χ2 = 4.669, P = 0.031) and surgical approach (χ2 = 9.428, P = 0.002) are related to functional outcomes. Multifactorial logistic regression analysis further confirmed that Meyers–McKeever typing (OR = 10.763, P = 0.036, [95