Accessory Tendon of Biceps Brachii Originated from Pectoralis Major

Abstract

During an educational dissection, accessory tendon of the biceps brachii muscle was found on the right side in a Korean cadaver. The short and long heads showed normal morphology and course: however, narrow tendon was originated from the posterior border of the pectoralis major muscle and was inserted into the conjoined tendon of the long head of the biceps brachii muscle. The authors describe this previously novel case report and discusses the clinical implications of such a variant.