What is latissimus dorsi tendon transfer?
Latissimus dorsi tendon transfer is a method for surgical treatment of massive irreparable posterosuperior cuff tears. It partially restores active anteflexion, external rotation, and function of the shoulder but does not significantly increase strength of the shoulder.
Does latissimus dorsi do external rotation?
The latissimus dorsi, at its anatomic insertion, remains an internal rotator at up to 70° of humeral external rotation. In contrast, the teres minor and all transferred positions of the latissimus dorsi act to rotate the humerus externally, with the moment arm increasing with the degree of humeral external rotation.
Does LAT attach to armpit?
The lats form the posterior wall of the axilla, which is the fancy word for armpit. You can feel for these more lateral fibers by taking your right hand to find the back flap of your left armpit and gently pressing your elbow in to your side to engage the fibers.
Where is the latissimus dorsi tendon?
The latissimus dorsi muscle (LDM) is a large flat muscle originating from the mid to the lower back. The insertion of the latissimus dorsi tendon (LDT) is located at the crest of the lesser tuberosity of the proximal humerus posterior to the pectoralis major tendon and anterior to the teres major tendon.
Where does the latissimus dorsi insertion?
the humerus
Latissimus dorsi muscle
| Latissimus dorsi | |
|---|---|
| Origin | Spinous processes of vertebrae T7-L5, thoracolumbar fascia, iliac crest, inferior 3 or 4 ribs and inferior angle of scapula |
| Insertion | Floor of intertubercular groove of the humerus |
| Artery | Thoracodorsal branch of the subscapular artery |
| Nerve | Thoracodorsal nerve (C6, C7, C8) |
What bones does the latissimus dorsi attach to?
Origin of the latissimus dorsi is from spinous processes of thoracic T7–T12, thoracolumbar fascia, iliac crest and inferior 3 or 4 ribs, inferior angle of scapula and insertion on floor of intertubercular groove of the humerus.
What motion does the latissimus dorsi do?
Functionally, the latissimus dorsi muscle belongs to the muscles of the scapular motion. This muscle is able to pull the inferior angle of the scapula in various directions, producing movements on the shoulder joint (internal rotation, adduction and extension of the arm).
What is the role of latissimus dorsi?
Latissimus dorsi works collaboratively with the teres major and pectoralis major to perform actions of the upper extremity. Together, these muscles will work to adduct, medially rotate and extend the arm at the glenohumeral joint.
What does the latissimus dorsi attach to?
Anatomy. The lower six thoracic vertebral spinous processes anterior to the attachment of the trapezius on the spinous processes. Through the thoracolumbar fascia latissimus dorsi attaches to the lumbar and sacral spinous processes (T6 to S5 levels), and the supraspinous ligament.
What happens when the latissimus dorsi contracts?
Due to the multidirectional alignments of its fibers, the latissimus dorsi muscle exhibits three actions on the shoulder joint: It effectively extends the flexed arm. It adducts and internally rotates the arm. If the humerus is fixed against the scapula, it pulls the pectoral girdle backward as a whole.
What exercises work the latissimus dorsi?
Weighted Pull Ups.