Radius


Radius


         It is a long bone of forearm which is situated in the lateral portion (towards the thumb). In it, there are two ends-upper and below and one shaft like ulna.

         There is a disc shaped head on the apex in the upper head which is jointed with the capitulum and radial notch of ulna. There is a neck under the head and there is a process named radial tuberosity in its medial portion viz towards the ulna on which the biceps muscles are connected. Shafts of ulna and radius are connected to each other by an interosseous membrane. The lower portion of the radius is broad which is jointed with the bones of wrist. There is a styloid process on it which can be felt by touching it outwards the wrist; there is also an ulnar notch like the English letter you in which the head of ulna is fitted.