Latissimus Dorsi

Latissimus Dorsi is one of the largest muscles in the human body, located in the back area. It is often referred to as the lats, especially in the context of bodybuilding and anatomy.

Anatomy

The Latissimus Dorsi originates from the lower half of the vertebral column and hip bone (ilium) and inserts on the humerus, the bone of the upper arm. It is a flat, triangular muscle, covering the lower back and extending to the sides and front of the body.

Function

The primary functions of the Latissimus Dorsi are to extend, adduct, and medially rotate the arm. It also plays a significant role in movements such as pulling and reaching. In addition, it assists in deep inspiration, acting as an accessory muscle of respiration.

Clinical significance

Injuries to the Latissimus Dorsi can occur due to overuse, strain, or direct trauma. Such injuries can result in pain, weakness, and limited range of motion. In some cases, surgical intervention may be required, such as in the case of a Latissimus Dorsi Flap procedure, which is often used in breast reconstruction surgery after mastectomy.

See also

• Muscular system
• Human anatomy
• Bodybuilding