A very rare case of a thoracobrachialis muscle

• DOI: 10.1007/s00276-023-03240-6
• Publication Date: 2023-09-21T15:02:20Z
• Authors: Nicol Zielinska; Piotr Karauda; Andrzej Węgiel; Bartłomiej Szewczyk; Łukasz Olewnik
• Keywords: Brachialis; Musculocutaneous nerve; Neurovascular bundle; Muscle belly; Epicondyle

The anterior arm compartment includes the biceps brachii muscle, brachialis and coracobrachialis they are characterized by different morphological variations. During standard anatomical dissection of right upper limb, an variant muscle was found. It originated from fascia covering long head tendon pectoralis major muscle. also connected to brachial fascia. demonstrated a thin which distally attached medial epicondyle humerus. Knowledge about variations in this region is clinically important because their direct correlation with neurovascular structures, may lead pathologies such as tingling, weakness, paresthesia, loss sensation.