Bicipital Groove Latissimus Dorsi

The latissimus dorsi is a thin wide triangular shaped muscle located at each side of the back right under each arm.

Bicipital groove latissimus dorsi. Teres major often gets discussed along with the latissimus muscle because it s a small muscle whose main job is to assist latissimus in some of its actions. It runs obliquely downward and ends near the junction of the upper with the middle third of the bone. Latissimus spirals from the back to the front with the lowest fibers of origin ending up highest. Bicipital groove of right humerus.

This muscle inserts on the intertubercular groove of the humerus which is. It is the lateral wall of the axilla. The teres major inserts on the medial lip of the groove. Information on the bony attachment footprint of these musc.

Some authors have suggested harvesting techniques in which the muscle is detached in continuity with a bone segment. Internal rotation of arm at shoulder. Due to its size and power latissimus has the potential to affect a wide range of actions in the body. The latissimus dorsi muscle whose name means broadest muscle of the back is one of the widest muscles in the human body.

The bicipital groove is typically 4 6 mm deep 1. The muscle runs between the. Also known as the lat it is a large flat triangular muscle that is not used strenuously in common daily activities but is an important muscle in many exercises such as pull ups chin ups lat pulldowns and swimming 91 1 93. Teres major muscle tm and latissimus dorsi muscle ld are frequently used in muscle transfers around the shoulder girdle.

The insertion of the latissimus dorsi is found along the floor of the bicipital groove. It inserts here on the floor of the bicipital groove. Action the action of latissimus dorsi are extension of arm at shoulder. The teres major inserts on the medial lip of the groove.

It runs obliquely downward and ends near the junction of the upper with the middle third of the bone. To get to its insertion the latissimus tendon has to spiral around teres major. The bicipital groove also known as the intertubercular sulcus or sulcus intertubercularis is the indentation between the greater and lesser tuberosities of the humerus that lodges the biceps tendon. The latissimus dorsi is a large powerful muscle on the back of the torso.

Adduction of arm at shoulder. Once the arm goes behind the torso the lats perform flexion of the shoulder. Bench press it s association with the latissimus dorsi. Latissimus dorsi like pectoralis major is a powerful adductor of the humerus.

It contains the tendon of the long head of the biceps brachii muscle which is ensheathed in a synovial reflection of the. The insertion of the latissimus dorsi is found along the floor of the bicipital groove. Nerve supply the thoracodorsal nerve c6 c7 c8 supplies the muscle. The latissimus dorsi insert on the medial inner side of the humerus this orientation allows for the latissimus dorsi to replace its function.