Inclusion Criteria: (1) Diagnosed anterior cruciate ligament injuries; (2) available preoperative MRI scans at our hospital.  -  Exclusion Criteria: Patients were excluded in the case of under 18 years of age, bilateral anterior cruciate ligament injuries, concomitant posterior cruciate ligament injuries, concomitant collateral ligament injuries, and no access to the preoperative MRI scan at our hospital.  -