Scapular

Scapular

Scapular (/ˈskæpjʊlər/; from Latin scapulae, "shoulders") is a term in anatomy that refers to the shoulder blade. It is a flat, triangular bone located in the upper back that connects the humerus (upper arm bone) to the clavicle (collar bone).

Anatomy

The scapula is part of the pectoral (shoulder) girdle and forms a joint with two other bones: the humerus and the clavicle. The scapula has two surfaces, three borders, three angles, and three processes: the acromion, the coracoid process, and the spine of the scapula.

Surfaces

The two surfaces of the scapula are the costal (anterior) surface and the dorsal (posterior) surface. The costal surface is concave and forms the subscapular fossa. The dorsal surface is divided by the spine of the scapula into the supraspinous and infraspinous fossae.

Borders

The three borders of the scapula are the superior, lateral (axillary), and medial (vertebral) borders.

Angles

The three angles of the scapula are the superior, inferior, and lateral angles. The lateral angle is the thickest part of the scapula and is where the glenoid cavity is located.

Processes

The three processes of the scapula are the acromion, the coracoid process, and the spine of the scapula. The acromion and the coracoid process serve as attachment points for various muscles and ligaments.

Related Terms

• Acromion
• Coracoid process
• Glenoid cavity
• Humerus
• Clavicle
• Subscapular fossa
• Supraspinous fossa
• Infraspinous fossa

See Also

• Shoulder girdle
• Bone
• Anatomy

External links

• Medical encyclopedia article on Scapular
• Wikipedia's article - Scapular

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