The detection of the capsular tear at the undersurface of the extensor carpi radialis brevis tendon in chronic XXXX : the value of magnetic resonance imaging and computed tomography arthrography.

@entity1 @entity2633 @entity13542
HYPOTHESIS: This study compared the diagnostic efficacy of magnetic resonance imaging (MRI) and computed tomography arthrography ( @entity13542 ) in the assessment of capsular tears at the undersurface of the extensor carpi radials brevis tendon in chronic @entity2633 using arthroscopy as a gold standard. Because of the higher spatial resolution of CT, we hypothesized that @entity13542 is superior to MRI for assessing capsular tears. MATERIALS AND METHODS: We retrospectively reviewed 19 consecutive @entity1 with chronic @entity2633 with preoperative MRI and @entity13542 studies who underwent arthroscopic surgery. Three observers with different levels of training and experience (musculoskeletal radiologist, experienced elbow surgeon, and hand fellow) evaluated the capsular tear by MRI and @entity13542 in a blinded manner. The results of the MRI and @entity13542 were compared and the agreement among the 3 observers was determined using an intraclass correlation coefficient (ICC). Then, the results of the MRI and @entity13542 examinations were compared with the intraoperative findings of the arthroscopic examination. The sensitivity, specificity, and k value were calculated. RESULTS: The ICC of @entity13542 (0.855) was superior to MRI (0.645). The sensitivity, specificity, and k value of @entity13542 were superior to those of MRI in each of the 3 observers. The k value was 0.79, 0.89, and 0.79 for @entity13542 , and 0.48, 0.48, and 0.27 for MRI for the radiologist, surgeon, and fellow, respectively. CONCLUSIONS: @entity13542 was a reliable and accurate diagnostic modality compared with MRI to detect the capsular tear in @entity1 with chronic @entity2633 . @entity13542 was less influenced by the observer's experience.
