Noun
The postaxial bone of the forearm, or branchium, corresponding to the fibula of the hind limb. See Radius.
An ell; also, a yard.
Source: Webster's dictionaryFor particularly heavy overhead lifts, a taped wrist enables the lifter to regulate wrist extension and delimit the translation of the radius and ulna distal heads. Source: Internet
Elephants are incapable of rotating their front legs, as the ulna and radius are fixed in pronation ; the "palm" of the manus faces backward. Source: Internet
The ulna and fibula are reduced in horses. Source: Internet
When holding a typical mouse, ulna and radius bones on the arm are crossed. Source: Internet