Subclavius posticus: an anomalous muscle in association with suprascapular nerve compression in an athlete

We present an athlete who presented with incapacitating suprascapular nerve compression associated with a subclavius posticus diagnosed by MRI. Symptoms were relieved, and function was restored by decompression of the nerve and excision of the anomalous muscle. We present this case to bring awareness of the subclavius posticus as an anatomic variant and a potential additional source for compression in suprascapular neuropathy. We recommend high-resolution magnetic resonance imaging to evaluate cases of isolated suprascapular neuropathy.
Level of Evidence: V

Source: Hand - March 1, 2015 Category: Surgery Source Type: research