Supracondylar process of humerus
Radiograph to rule out fracture.
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No fracture or joint effusion noted. There is a small bony protuberance on the anterior surface of the distal humerus pointing towards the elbow joint. Features are of a supracondylar spur.
A bony outgrowth is seen from distal shaft of humerus on antero-medial aspect. It is directed towards joint (as compared to an exostosis which is directed away from the joint).
It represents a supracondylar spur, which is believed to represent a phylogenetic vestige of the supracondyloid foramen found in reptiles and some mammals. It may act as the insertion point of a persistent part of coracobrachialis. A band of fibrous tissue - ligament of Struthers - joins the tip of the process and medial epicondyle of the humerus.