Biomaterial Database

Unusual pectoralis major muscle: the chondroepitrochlearis. 2008

Vijaya Paul Samuel, and Venkata Ramana Vollala

Department of Anatomy, Melaka Manipal Medical College (Manipal Campus), International Center for Health Sciences, Manipal, Karnataka, India.

Presented herein is a case of an extremely rare muscle in the pectoral region. It involved an accessory muscular slip originating from the pectoralis major and inserting onto the medial epicondyle of the humerus and the medial intermuscular septum. According to the literature this muscle is defined as chondroepitrochlearis. The arterial and nervous supply to the muscle came from the lateral thoracic artery and the medial pectoral nerve, respectively. Clinical considerations of such a variation include ulnar nerve entrapment and functionally limited abduction of the humerus.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D010369	Pectoralis Muscles	The pectoralis major and pectoralis minor muscles that make up the upper and fore part of the chest in front of the AXILLA.	Pectoralis Major,Pectoralis Major Muscle,Pectoralis Minor,Pectoralis Minor Muscle,Pectoral Muscle,Muscle, Pectoral,Muscle, Pectoralis,Muscle, Pectoralis Major,Muscle, Pectoralis Minor,Muscles, Pectoralis Major,Pectoral Muscles,Pectoralis Major Muscles,Pectoralis Majors,Pectoralis Minor Muscles,Pectoralis Minors,Pectoralis Muscle
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006811	Humerus	Bone in humans and primates extending from the SHOULDER JOINT to the ELBOW JOINT.	Humeri,Greater Tubercle,Humeral Greater Tuberosity,Humeral Lesser Tuberosity,Lesser Tubercle,Olecranon Fossa,Olecranon Fossi,Greater Tubercles,Greater Tuberosities, Humeral,Greater Tuberosity, Humeral,Humeral Greater Tuberosities,Humeral Lesser Tuberosities,Lesser Tubercles,Lesser Tuberosities, Humeral,Lesser Tuberosity, Humeral,Tubercle, Greater,Tubercles, Greater
D013895	Thoracic Arteries	Arteries originating from the subclavian or axillary arteries and distributing to the anterior thoracic wall, mediastinal structures, diaphragm, pectoral muscles, mammary gland and the axillary aspect of the chest wall.	Arteries, Thoracic,Artery, Thoracic,Thoracic Artery
D013900	Thoracic Nerves	The twelve spinal nerves on each side of the thorax. They include eleven INTERCOSTAL NERVES and one subcostal nerve. Both sensory and motor, they supply the muscles and skin of the thoracic and abdominal walls.	Pectoral Nerves,Nerve, Pectoral,Nerve, Thoracic,Nerves, Pectoral,Nerves, Thoracic,Pectoral Nerve,Thoracic Nerve