Beneath the neck of the radius, on the medial side, is an eminence, the radial tuberosity, or bicipital tuberosity; its surface is divided into: a posterior, rough portion, for the insertion of the tendon of the biceps brachii. an anterior, smooth portion, on which a bursa is interposed between the tendon and the bone. Ligaments that support the elbow joint also attach to the radial tuberosity.
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