We present a case of a 46-year-old male presenting with a 10 year history of pain and paraesthesia in the median nerve distribution together with a palpable lump in the upper arm. X-rays confirmed a supracondylar process of the humerus. Intra-operatively it was found that there was an aberrant insertion of one of the heads of pronater teres from the process. After surgical removal of the process and release of the head of pronator teres his symptoms improved.
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