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Shoulder Dislocation-MRI

Area of high signal intensity involving the posterosuperior humeral head. This site is charactersitic of hatchet/hill sach lesion usually sequale to previous dislocation. Altered signal intensity is also noted in relation to the anteroinferior glenoid labrum, possibly associated bankart's lesion.  This is 20 year old boy with history of shoulder trauma 2 years back, no other details were available.

There is minimal atrophy/fatty changes in the infraspinatus muscle, ?significance. Atrophy localized to the infraspinatus muscle can occur secondary to suprascapular neuropathy and can be caused by either a compressive mass in the suprascapular or spinoglenoid notch or a traction injury to the nerve. No obvious mass/cyst was demonstrable in the spinoglenoid notch, indicating traction injury in this case.

Shoulder Dislocation-MRI Reviewed by Sumer Sethi on Friday, December 17, 2010 Rating: 5

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