Stuck on a crossword? Uncover the mystery bone next to the radius

The crossword question “Bone next to the radius is ULNA” is asking for a bone that is located next to the radius bone in the forearm. The answer is the ulna bone, which is one of the two long bones in the forearm. The ulna bone is located on the medial, or inner, side of the forearm and runs parallel to the radius bone. It is slightly longer than the radius bone and is responsible for forming the elbow joint with the humerus bone. Additionally, the ulna bone plays a crucial role in allowing us to rotate the forearm and perform a variety of different wrist and hand movements.