Músculo ancóneo epitroclear. Una infrecuente causa de neuropatía cubital del codo

The entrapment neuropathy of the ulnar nerve at the elbow is a frequent pathology with a variety of etiologies. One of them is the presence of an accessory muscle, such as the anconeus epitrochlearis. Although this muscle is frequently found in the general population, it is a rare cause of nerve compression. Despite its similarity to the idiopathic form, there are certain features that may suggest that the compression is due to this accessory muscle. This work reports a representative case in which the anconeus epitrochlearis was discovered during the surgical intervention.