Yu-Ran Heo; Jae-Hee Park; In-Jang Choi & Jae-Ho Lee

Variation in the biceps brachii muscle is extremely frequent and has a clinical significance. During an educational dissection, third head of the biceps brachii muscle was found on the left side in a Korean cadaver. The short and long heads showed normal morphology and course: however, additional head originated from the greater tubercle connected to long head of biceps brachii muscle and crossed the musculocutaneous nerve perpendicularly. And then, it was inserted into short head of the biceps brachii muscle. The author describes this previously novel case report and discusses the clinical implications of such a variant.

KEY WORDS: Biceps brachii muscle; Third head; Variation.

HEO, Y. R.; PARK, J. H.; CHOI, I. J. & LEE, J. H. Third head of the biceps brachii muscle originated from the greater tubercle connecting long and short heads: A case report. Int. J. Morphol., 38(1):23-25, 2020.