Anconeus epitrochlearis muscle
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At the time the article was created Imran Jindani had no recorded disclosures.View Imran Jindani's current disclosures
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The anconeus epitrochlearis muscle is an accessory muscle of the upper limb at the medial aspect of the elbow. It is also known as the accessory anconeus muscle or epitrochleoanconeus muscle and should not be confused with the anconeus muscle which is present at the lateral aspect of the elbow.
The muscle may be unilateral but has been found to be bilateral in one of four patients with cubital tunnel syndrome 2. It is present in ~15% (range 3-28%) of the population 3.
- medial epicondyle (inferior surface)
- olecranon (medial cortex)
Axial MR images may demonstrate a mass superficial to the cubital tunnel, where there should normally only be fat.