The ulna is a long bone in the forearm. It lies medially and parallel to the radius, the second of the forearm bones. The ulna acts as the stabilising bone, with the radius pivoting to produce movement. Proximally, the ulna articulates with the humerus at the elbow joint. Distally, the ulna articulates with the radius, forming the distal radio-ulnar joint. In this article, we shall look at the ...
The radius and ulna are the two bones of the forearm. Learn all about their anatomy at Kenhub!
The ulna and radius are the two long bones of the forearm, working together to facilitate a wide range of movements in the arm and hand. Positioned with the ulna on the medial side and the radius on the lateral side, these bones are connected by an interosseous membrane, ensuring coordinated function. Their anatomical structure is critical for professionals in fields like orthopedics, physical ...
Ulna, inner of two bones of the forearm when viewed with the palm facing forward. (The other, shorter bone of the forearm is the radius.) The upper end of the ulna presents a large C-shaped notch—the semilunar, or trochlear, notch—which articulates with the trochlea of the humerus (upper arm bone)
The ulna is one of two bones that make up the forearm, the other being the radius. It forms the elbow joint with the humerus and also articulates with the radius both proximally and distally. It is located in the medial forearm when the arm is in the anatomical position. It is the larger of the two ...
The ulna is one of two long bones in the lower arm or forearm. The other bone is the radius, which is a little bit smaller and shorter than the ulna. Generally, muscles are composed of tissues that ...