Diagnostic Clusters in Shoulder Conditions by Puneet Monga & Lennard Funk

Author:Puneet Monga & Lennard Funk
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

Discussion of the Case

The presentation of the patient described earlier in the chapter with an isolated infraspinatus weakness is highly suggestive of a compressive lesion of the suprascapular nerve at the level of the spinoglenoid notch. In a higher lesion of the suprascapular nerve at the level of suprascapular notch, both supraspinatus and infraspinatus are affected. When the lesion is present further proximally, in the brachial plexus/cervical spine, other muscles such as the deltoid are also involved. This patient underwent an MR arthrogram which confirmed the presence of a posterior labral tear and a para labral cyst encroaching the spinoglenoid notch. The MR also revealed isolated wasting and fatty atrophy of the infraspinatus muscle but no tendon tears. The patient underwent arthroscopic decompression of the cyst and a posterior labral repair.

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