Shoulder Injuries in Overhead Athletes: Utility of MR Arthrography

Introduction: The goal of this work was to assess the accuracy of the MR-Arthrografie in the evaluation of over head athletes injuries in comparison with athroscopy. Material and methods: In 29 patients (middle age: 30 years, 21 male, 8 female, age 16-53 years) with persistent pain after conservative therapy an Arthro-MRI with intraarticular application of gadolinum was performed prior to arthroscopic Surgery. The MRI was retrospectivly analysed of three examiners independently from one another. The result were compared to the results of the Arthroscopy. Interrater Reliability Was Calculated by using of Cohens Kappa. Results: The MR-Arthrography Could demonstrate 8 of 9 (88.9%) partial tears of he rotator cuff. All SLAP (Superiores Labrum from Anterior to Posterior) Lesions as well as all bankart type Lesions were recognized through the MR-Arthrography. However, dependent upon the experience of the examiner in a span between 33.3% (fellow radiologist) and 93.3% (consultant radiologist). We found a high agreement between consultant radiologist and shoulder Surgeon with Kappa of 0.79 for rotator Cuff tear-, 0.86 for Bankart- and 0.82 for SLAP-Lasionen.