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Unicameral Bone Cyst
Joseph Junewick, MD FACR
over 9 years ago
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Supracondylar Process

Case Detail

Anatomy: Musculoskeletal
Joseph Junewick, MD FACR
Diagnostic Category: Developmental or Congenital
Created: over 10 years ago
Updated: over 10 years ago
Tags: PEDS
Modality/Study Types: CR
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16 month old female with palpable abnormality.

Case Images


Supracondylar Process of the Humerus


CR – Exostosis extending medially from the anterior supracondylar humerus.


The supracondylar process is a vestigial remnant of the supracondylar foramen or epitrochlear foramen found in cats, climbing mammals and lower primates. The supracondylar process serves as an attachment site for muscular variations of the pronator teres and coracobrachialis (and phylogenically,the climbing muscle latissim-condyloideus) and offers some protection to the neurovascular bundle.

The supracondylar process is a uncommon normal variation. It is a hook-like boney spur of variable size eminating from the anteromedial distal humerus. A fibrous band may connect this process to the medial epicondyle; this band occasionally ossifies.

A supracondylar process is usually of no clinical significance. Fractures have been reported. Occasionally, the brachial artery and/or the median nerve may become compressed.


Kumar GR. A study of the incidence of supracondylar process of the humerus. J Anat Soc India 2008; 57(2):111-115.

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