Distal biceps tendon insertional trifurcation and a new footprint configuration: Case report of an anatomical variant

ABSTRACT

Distal biceps tendon (DBT) insertion on the elbow bicipital tuberosity is usually bifurcated into distinct long and short head components, and oc-casionally the tendon may insert as a single unit. A previously undescribed trifurcate insertion of the DBT was observed during anatomical dissections; this new anatomical finding involved 3 distinct divisions of the distal biceps (1) a distal short head insertion, (2) a proximal long head insertion, and (3) an extra / accessory head that bifurcated from the long head and inserted with an anterior and radial footprint. Recognition of this variant is necessary, as DBT insertional trifurcation may alter radiological interpretation of imaging scans and may obscure endoscopic visualization of the insertional area during diagnostic endoscopy

RESUMEN

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