Supracondylar process of humerus

Case contributed by Dr Maulik S Patel

Presentation

Radiograph to rule out fracture.

Modality: X-ray

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.

Case Discussion

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.

Compression of median nerve or brachial vessels may occur, but they are usually asymptomatic.

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Case Information

rID: 9111
Case created: 18th Mar 2010
Last edited: 3rd Dec 2015
Inclusion in quiz mode: Included

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