Evaluation of ACL Graft Remodeling and Prediction of Graft Insufficiency in Sequenced MRI—Two-Year Follow-Up

Background: Postoperative magnetic resonance imaging (MRI) evaluation of anterior cruciate ligament (ACL) graft maturity is a useful and practical tool that allows for assessment status remodeling stage. The purpose this study was to evaluate compare previously described methods in MRI. We identify factors influencing the maturation correlating appearance MRI with indirect symptoms insufficiency patients at risk. Methods: Retrospective performed 44 who received bone patellar tendon (BPTB) ACL reconstruction nine consecutive postoperative MRIs 2, 6, 12, 18, 24, 36, 48, 72, 96 weeks. Graft evaluated using signal-to-noise quotient (SNQ) both sagittal axial planes. also assessed homogeneity by standard deviation (SD) signal intensity. SNQ correlated patient’s age, sex, weight-bearing, as well signs including appearance, posterior (PCL) buckling, measurement tibia subluxation. Results: observed results modelling SNQs from planes were similar. For SNQs, change over weeks nonlinear where clinical parameter increased week 36 subsequently decreased. does not reach levels 2. model incorporating relative SD (rSD) plane predicted subluxation proportions better than parameters measured plane. Our demonstrate greater associated less homogeneity, which could indicate good predictor insufficiency. In addition, proportion PCL buckling course study. Conclusions: very assessing ligamentization stage predict