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Costal tuberosity
Costal tuberosity of clavicle
Left clavicle. Inferior surface. (Costal tuberosity labeled at center left.)
On the medial part of the clavicle is a broad rough surface, the costal tuberosity (impression for costoclavicular ligament), rather more than 2 cm. in length, for the attachment of the costoclavicular ligament.