• Journal of the Korean Society of Radiology
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• v.85 no.1
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• pp.171-183
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• 2024

Purpose This study aimed to investigate which indirect parameters on preoperative MRI were the principal predictors of subscapularis tendon tears (STTs) requiring surgical repair. Materials and Methods Preoperative MRI scans of 86 patients were retrospectively reviewed for visual assessment of the STT, pathology of the long head of the biceps tendon (LHBT), posterior decentering (PD) of the humeral head, humeral rotation, fatty degeneration, and subscapularis muscle atrophy. To evaluate atrophy, visual grading using the anatomical line connecting the coracoid tip to the glenoid base, designated as the base-to-tip line (BTL), and thickness measurements were performed in the en-face view. Results Arthroscopically, 31 patients (36%) exhibited Lafosse type III or IV STT and underwent surgical repair. LHBT pathology (p = 0.002), PD of the humeral head (p = 0.012), fatty degeneration (p < 0.001), and BTL grade (p = 0.003) significantly correlated with STT. In the multivariate analysis, PD of the humeral head (p = 0.011, odds ratio [OR] = 5.14) and fatty degeneration (p = 0.046, OR = 2.81) were independent predictors of STT. Conclusion PD of the humeral head and fatty degeneration of the subscapularis can help to diagnose clinically significant STT. Interpretation of these findings may contribute to the planning of an optimal surgical strategy.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.5 no.1
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• pp.46-49
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• 2012

Diagnoses of the acromial fractures are frequently delayed because most acromial fractures are non-displaced or minimally displaced patterns and the frequency are low. We report a case that a non-displaced acromial fracture of 74 years old male hit by the falling pipes could be diagnosed by the ultrasonography. For this case who had a pain, swelling, and the limitation of active elevation of the left shoulder after direct injury, the evaluation about the rotator cuff and the biceps long head tendon was required but the early diagnosis of the non-displaced acromial fracture was done by the easier ultrasonography before the additional studies. The ultrasonography has the advantage over the computed tomography in the aspect of evaluating the injury of the tendons of the shoulder joint.