Latissimus Dorsi Muscle

The Latissimus Dorsi Muscle

David Keil Anatomy, Upper Limb Leave a Comment

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Latissimus Dorsi - The Swimmer’s Muscle

Latissimus Dorsi MuscleWhat does the latissimus dorsi muscle mean?

The name of the latissimus dorsi muscle describes its size and location. Latissimus comes from the Latin word “latus” meaning wide, and dorsi comes from the Latin word “dorsum” meaning back.

Where does the latissimus dorsi muscle attach?

Origin
  • thoracolumbar aponeurosis (fancy way of saying a common tendinous sheath). It connects the attachments to the areas below with the exception of the inferior angle of the scapula.
  • T7-L5 – on the spinous processes (the parts that stick out that we can feel on our back).
  • sacrum
  • crest of the ilium (top back portion of the pelvis)Latissimus Dorsi Muscle Attachments
  • inferior (bottom) angle of the scapula
Insertion
  • bicipital groove – A divot in the bone that the biceps tendon lays in.

What actions does the latissimus muscle do?

  • medial (internal) rotation of the shoulder joint
  • extension of the shoulder joint
  • adduction of the shoulder joint
  • depression of the scapula
Assists these actions
  • lateral flexion of the trunk
  • extension of the spine

Postures where the latissimus dorsi muscle contracts

latissimus dorsi muscle in uttitha hasta padangusthasana

The latissimus dorsi muscle contracts to bring the upper arms toward the body in adduction.

latissimus dorsi muscle in bakasana

The latissimus dorsi muscle helps stabilize the shoulder in bakasana.

Postures where the latissimus dorsi muscle lengthens

latissimus dorsi muscle in utkatasana

The latissimus dorsi muscle is lengthened with the arms abducted and flexed.

Trigger points

Trigger Points in the Latissimus Dorsi Muscle

Learn All of Your Muscles

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This website is simply about delivering yoga anatomy to the yoga community in a simple and understandable way. It has always been about you, the reader, understanding the complexity and diversity of our own humanness as well as our anatomy.

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