Spine of the scapula

Definition

The spine of the scapula is a prominent bony ridge running across the posterior surface of the scapula, dividing it into two unequal sections. It serves as an attachment point for muscles of the shoulder.

Related terms

Scapula:

A flat, triangular bone located on the posterior side of the ribcage that articulates with the humerus and clavicle to form the shoulder joint.

Acromion:

The lateral extension of the spine of the scapula, forming the highest point of the shoulder and serving as an attachment for ligaments and muscles.

Glenoid cavity: A shallow depression on the lateral aspect of the scapula that articulates with the head of the humerus to form part of the shoulder joint