[Magnetic resonance tomographic diagnosis of internal lesions of the shoulder following luxation. A comparison with arthroscopic findings].

Fifteen patients with a recurrent dislocation of the glenohumeral joint were preoperatively investigated by MRI. We created a special protocol with axial T1-, T2-, proton-density- and sagittal T1-weighted images. MRI findings such as defects of the glenoid labrum and Hill-Sachs compression fractures proved to be correct during surgery. In the chosen protocol the diagnostic imaging of rotator cuff lesions was not specific. In 10 cases lesions were seen but in only 5 patients did these findings prove to be correct during surgery. However, MRI imaging of glenohumeral joints is a reliable non-invasive diagnostic method.