brachialis muscle


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bra·chi·a·lis mus·cle

(brā-kē-ā'lis mŭs'ĕl)
Origin, lower two thirds of anterior surface of humerus; insertion, coronoid process of ulna; action, flexes elbow; nerve supply, musculocutaneous, usually with a minor contribution from the radial.
Synonym(s): musculus brachialis [TA] .

brachialis muscle

Arm muscle. Origin: anterior surface of lower (distal) humerus. Insertion: coronoid process of ulna. Nerve: musculocutaneous and radial (C5-C7). Action: flexes forearm.
See: arm for illus. (Muscles of the Arm)
See also: muscle
References in periodicals archive ?
A sub-muscular extraperiosteal tunnel is prepared between the Brachialis muscle and the underlying periosteum with a narrow periosteal elevator or Cobbs elevator inserted first from proximal incision distally and then from distal incision proximally.
Rehabilitation of myositis ossificans in the brachialis muscle. J Athl Train.
Results of reinnervation of the biceps and brachialis muscles with a double fascicular transfer for elbow flexion.
Part or all of the brachialis muscle may require resection depending upon the extent of the tumor.
Closed reduction and percutaneous pinning of displaced supracondylar humerus fractures in children: description of a new closed reduction technique for fractures with brachialis muscle entrapment.
Rupture of the distal biceps brachii tendon: isokinetic power analysis and complications after anatomic reinsertion compared with fixation to the brachialis muscle, J Shoulder Elbow Surg, 2003 Nov-Dec;12(6):607-11.
Musculocutaneous nerve arise in axilla from lateral cord of brachial plexus and passes downward & laterally, pierces the coracobrachialis muscle, then run downward between the biceps and the brachialis muscle, and further continues as the lateral cutaneous nerve of the forearm.
The physical examination and radiographs can be equivocal due to the strength of the uninjured brachialis muscle and the stabilizing power of the lacertus fibrosis.
The radial nerve supplies sensitive innervation to the postero-lateral skin of upper limbs and motor innervation to triceps brachialis muscle. This nerve does not send branches to the muscles from the anterior compartment of the upper limbs (van de Graaff, 2003).
A second incision was made over the distal part of the plate, over the lateral border of biceps muscle, which was retracted medially to expose the brachialis muscle. Fibres of brachialis were split longitudinally, providing extra periosteal access to the anterolateral distal humeral shaft.
Treatment options in clude nonoperative management, non-anatomic repair to the brachialis muscle, attempted biceps release with anatomic repair, and biceps reconstruction with autograft or allograft augmentation.