ATTACHMENTS OF THE CLAVICLE

1. At the lateral end the margin of the articular surface for the acromioclavicular joint gives attachment to the joint capsule.
2. At the medial end the margin of the articular surface for the sternum gives attachment to : (a) The capsule all around : (b) the articular disc posterosuperiorly and (c) the interclavicular ligament superiorly.
3. Lateral one third of shaft: (a) The anterior border gives origin to the deltoid (b) The posterior border provides insertion to the trapezius (c) Conoid tubercle and trapezoid ridge give attachment to the conoid and trapezoid parts of the coracoclavicular ligament.

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4. Medial two thirds of the shaft :

(a) The anterior surface gives origin to the pectorallis major

(b) The rough superior surface gives origin to the clavicular head of the sternocleidomastoid.

(c) The oval impression on the inferior surface at the medial end gives attachment to the costoclavicular ligament.

(d) The subclavian groove gives insertion to the subclavus muscle. The margins of the groove give aatachment to the clavipectoral fascia.

 

Scapula and Clavicle

Sternoclavicular Joint

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