Radius (bone) ulna (center of the circle) to the edge of the radius (the circle). The ulna acts as the center point to the circle because when the arm is rotated the ulna does not move. In four-legged animals, the radius is the main load-bearing bone of the lower forelimb. Its structure is similar in most terrestrial tetrapods, but it may be fused with the ulna in some mammals (such as horses) and reduced or modified in animals with flippers or vestigial forelimbs. Radius (bone) The radius or radial bone is one of the two large bones of the forearm, the other
Child bone fracture sport activities increase, the fractures in children increase as well, especially for boys who participate in either wrestling or football. Much like bone types in the different stages of childhood are varying, so the bone fracture injuries in infants, children, and adolescents vary. Careful evaluation for the best treatment of each child is needed. The bones of a child are more likely to bend than to break completely because they are softer and the periosteum is stronger and thicker. The fractures that are most common in children are the incomplete fractures; these fractures are the greenstick and torus or buckle