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The latissimus dorsi, to use the muscles' proper name, are the wide, fan-shaped muscles that make up the majority of your mid-back. The lats are especially consequential for several reasons.
Latissimus dorsi: Patient pushes the ipsilateral arm into adduction against resistance. 12: Quadratus Lumborum: Patient pushes the ipsilateral arm into adduction ...
The axillary arch is an arch-shaped anatomical variant of the latissimus dorsi muscle of the human back. [6] [7] Its shape varies, but its defining characteristics are its origin from the latissimus dorsi muscle, its insertion close to or on the upper anterior part of the humerus, and that it crosses the neurovascular bundle associated with the axillary nerve from dorsomedial to ventrolateral. [6]
The thoracolumbar fascia is thought to be involved in load transfer between the trunk and limb (it is tensioned by the action of the latissimus dorsi muscle, gluteus maximus muscle, and the hamstring muscles), and lifting. [1]: 814–815 It is endowed with nociceptive receptors, and may be involved in some forms of back pain. [1]: 814–815
[1] [3] [4] The trapezius, infraspinatus, and brachialis muscles are most active at the beginning of the pull-up; the latissimus dorsi, teres major, and biceps brachii reach peak activity during the middle of the movement, and the triceps brachii and subscapularis experienced maximum activity at the top of the movement. [5]
The "lat" sometimes added before "pull-down" commonly refers to the latissimus dorsi used in the movement. Most exercises describe the muscle that is involved and the direction of the exercise e.g. biceps curl, triceps extension, leg press, hamstring curl, abdominal curl and so on.
The primary cause of shoulder pain is a rotator cuff tear. [20] The supraspinatus is most commonly involved in a rotator cuff tear, [22] but other parts of the rotator cuff may also be involved. There are different severities of a rotator cuff tear, which range from a partial tear to a full-thickness tear. [23]
The teres major muscle (from Latin teres, meaning "rounded") is positioned above the latissimus dorsi muscle and assists in the extension and medial rotation of the humerus. This muscle is commonly confused as a rotator cuff muscle, but it is not, because it does not attach to the capsule of the shoulder joint , unlike the teres minor muscle ...