Citation, DOI, disclosures and article data
At the time the article was created Jeremy Jones had no recorded disclosures.View Jeremy Jones's current disclosures
The brachialis muscle is one of the three muscles of the anterior compartment of the upper arm. Unlike biceps brachii (which is also a supinator) it acts only to flex the elbow. Isolated brachialis injuries are rare.
Brachialis has a large superficial head and a smaller deep head.
The superficial head origin is the anterolateral mid humeral shaft and lateral intermuscular septum. Its thick round tendon inserts into the distal portion of the ulnar tuberosity.
The deep head origin is the anterior distal humeral shaft and medial intermuscular septum and its muscle belly lies posterolateral to the superficial head. The distal aponeurosis narrows, merges with the superficial tendon and inserts onto the proximal ulnar tuberosity as well as the coronoid process.
Brachialis is the most powerful flexor of the elbow and is most effective at 90 degrees of flexion. It is an important elbow stabilizer.
- 1. Last's anatomy, regional and applied. Churchill Livingstone. ISBN:044304662X. Read it at Google Books - Find it at Amazon
- 2. Moore KL, Agur AMR, Dalley AF. Clinically oriented anatomy. LWW. ISBN:1451119453. Read it at Google Books - Find it at Amazon
- 3. Vadgaonkar R, Rai R, Ranade AV, Nayak SR, Pai MM, Lakshmi R. A case report on accessory brachialis muscle. (2008) Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie. 49 (4): 581-3. Pubmed
- 4. Sanal H, Chen L, Negrao P, Haghighi P, Trudell D, Resnick D. Distal Attachment of the Brachialis Muscle: Anatomic and MRI Study in Cadavers. AJR Am J Roentgenol. 2009;192(2):468-72. doi:10.2214/ajr.08.1150 - Pubmed
- 5. Leonello D, Galley I, Bain G, Carter C. Brachialis Muscle Anatomy. The Journal of Bone & Joint Surgery. 2007;89(6):1293-7. doi:10.2106/jbjs.f.00343 - Pubmed
- 6. Kamineni S, Bachoura A, Behrens W, Kamineni E, Deane A. Distal Insertional Footprint of the Brachialis Muscle: 3D Morphometric Study. Anatomy Research International. 2015;2015:1-6. doi:10.1155/2015/786508