Latissimus Dorsi

Overview

The latissimus dorsi is the broadest muscle in the body, spanning from the lower thoracic spine and iliac crest to the upper humerus. It is the primary muscle for pulling movements, internal rotation, and adduction of the arm.

Pain Pattern

Trigger points refer pain to the inferior angle of the scapula, the posterior shoulder, and down the inner arm to the ring and little fingers. The pain is constant and aching, worsening with reaching overhead or behind the body.

Common Causes

Repetitive pulling movements, swimming, rowing, climbing, and carrying heavy loads with arms extended all activate these trigger points. Prolonged slouching also shortens the muscle.

How to Use the Pressure Pointer

Lie on your side with the Pressure Pointer on the lateral back wall, just below and behind the armpit. Roll slightly to apply body weight. Hold each tender point for 60 seconds. Work from the axillary border downward. Follow with an overhead side bend stretch.