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Brachial plexitis following Moderna vaccination

Joseph Lubeck1/11/22 5:44 PM (CST)
Wondering what other experience the group may have.
I saw a 61 YO man who came in today for routine annual followup and med refills for a small fiber neuropathy. He mentioned that he was being treated for a left rotator cuff tear.
In late October he received Moderna #2 in left deltoid. About 36 hours later he developed intense pain in the shoulder lasting 48 hours followed by weakness in shoulder musculature. He had a followup with an orthopod who had performed a left TKR and diagnosed him with a RC tear (no comment). On exam, only had forward and lateral flexion of LUE to 90 degrees and weakness of infraspinatus, but full passive ROM. EDX with fibs in deltoid, BC, supraspinatus and infraspinatus. Rhomboids and PS clean. 
Diagnosis seems clear. I read a couple case reports. Also curious if there is any predilection for post-vaccine plexitis to develop in the injected arm. 
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