Deltoid tubercle of spine of scapula

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Deltoid tubercle of spine - left scapula01

The deltoid tubercle of the spine of the scapula is a prominent anatomical feature located on the scapula, or shoulder blade. It serves as an important attachment point for muscles and ligaments, playing a crucial role in the movement and stability of the shoulder joint.

Anatomy

The deltoid tubercle is situated on the posterior aspect of the spine of scapula, which is a ridge running across the back of the scapula. The spine of the scapula divides the posterior surface of the scapula into the supraspinous fossa and the infraspinous fossa. The deltoid tubercle is located near the lateral end of the spine of the scapula, where it provides an attachment point for the deltoid muscle.

Function

The primary function of the deltoid tubercle is to serve as an attachment site for the deltoid muscle. The deltoid muscle is responsible for the abduction, flexion, and extension of the shoulder joint. The attachment at the deltoid tubercle allows the muscle to exert force on the scapula, facilitating these movements.

Clinical Significance

Injuries or conditions affecting the deltoid tubercle can impact shoulder function. For example, fractures of the spine of the scapula or tears in the deltoid muscle can lead to pain and limited mobility. Proper diagnosis and treatment are essential for restoring normal shoulder function.

Related Structures

• Scapula
• Spine of scapula
• Deltoid muscle
• Supraspinous fossa
• Infraspinous fossa
• Shoulder joint

See Also

• Anatomy of the scapula
• Muscles of the shoulder
• Shoulder injuries
• Bone anatomy