ASSESSMENT OF THE SUPERIOR LABRUM OF THE SHOULDER JOINT WITH CT-ARTHROGRAPHY AND MR-ARTHROGRAPHY - CORRELATION WITH ANATOMICAL DISSECTION

The ability to detect and categorize SLAP (Superior Labrum Anterior to Posterior) lesions of the scapular labrum is of practical importance to the orthopedic surgeon and the radiologist. The aim of this study, performed on cadaveric shoulders, was to determine whether CT arthrogr aphy or MR arthrography is able to show normal anatomical variation of the glenoid labrum and detect labral abnormalities. CT arthrography, MR arthrography followed by anatomical dissection were performed on tw enty three fresh frozen cadaveric shoulders and analysed by a radiolog ist and two orthopaedic surgeons. As Gadolinium intra-articular inject ion is not allowed in France, we used an iodinated contrast media for both MR arthrography and CT arthrography. In this study, the sensitivi ty of MR arthrography seemed higher than CT arthrography (respectively 4 and 3 labral lesions diagnosed out of five), although no significan t statistical conclusions can be made due to the small number of cases , In conclusion, under such specific conditions, MR arthrography seems to be the method of choice for the detection and classification of la bral lesions.