Die Aussagekraft der Magnetresonanztomographie an der Schulter - retrospektive Analyse von 224 operativ überprüften Patienten
LicenseStandard (Fassung vom 03.05.2003)
Significance of Magnetic Resonance Imaging (MRI) of the shoulder. A retrospective analysis and surgical correlation in 224 cases. INTRODUCTION: In common clinical practice differences between MRI diagnosed lesions and findings at surgery are seen quite often. We examined the accuracy of Magnetic Resonance Imaging (MRI) by correlating the preoperative diagnosis with findings at surgery. MATERIALS AND METHODS: 224 original reports of shoulder MRI and correlating surgical reports were retrospectively compared. Accuracy was evaluated with sensitivity and specificity rates, positive and negative predictive values. The assessed lesions were cuff lesions, lesions of subscapularis and biceps tendon, Hill-Sachs lesions, cartilage lesions of humeral head and glenoid fossa, labrum lesions and lesions of the glenohumeral ligaments. RESULTS: We observed lower sensitivity and specificity rates than those reported in the literature for all lesions. Only cuff lesion showed acceptable results with sensitivities between 70% and 85%. Poorest value of the study were the results for labral lesions with an overall accuracy of 45.5%. The subscapularis tendon and the inferior glenohumeral ligament as the major passive stabilizers of the joint are mentioned only in 45 respectively 22 of all MRI reports. CONCLUSION: MRI reports of the shoulder should be regarded with caution in clinical practice. Many factors affect reproducibility and accuracy. MRI seems not able to make sufficient diagnosis of glenohumeral instability or shoulder lesions except for cuff lesions.
Subject HeadingsKernspintomograph [GND]
Nuclear magnetic resonance [MeSH]
Rotator cuff [MeSH]
Shoulder. Radiography [MeSH]