L-shaped morphology is a key risk factor for delamination in degenerative full-thickness rotator cuff tears.

Purpose: To evaluate the relationship between delamination and tear patterns in degenerative full-thickness rotator cuff tears.

Methods: This retrospective cohort study was conducted on patients who underwent shoulder arthroscopy for rotator cuff tears between December 2020 and September 2024. The study included chronic, degenerative, full-thickness rotator cuff tears without concomitant shoulder pathology.

The potential of posterior cruciate ligament buckling phenomenon as a sign for partial anterior cruciate ligament tears.

Introduction: Diagnosis of a partial tear of the anterior cruciate ligament (ACL) can be challenging with physical examination and imaging techniques. Although magnetic resonance imaging (MRI) has high sensitivity and specificity for diagnosing complete ACL tears, its effectiveness may be limited when it is used to diagnose for partial tears. The hypothesis of the present study is that the posterior cruciate ligament (PCL) buckling phenomenon, which is a secondary sign of complete ACL tears on MRI, may be a useful method for diagnosing partial ACL tears.