Sep 7, 2018 · The radius, also known as the radial bone, is one of the two forearm bones in the human body, with the other being the ulna. It is instrumental in the shaping and use of hands [1]. It is located on the thumb side of the hand, lying laterally in the lower arm, parallel in …

Oct 30, 2023 · In the anatomical position, the radius is found in the lateral forearm, while the ulna is found in the medial forearm. The radius is shorter than the ulna and has a small proximal end that articulates with the humerus, and a broad distal end that articulates with the carpal bones at …

The first groove is broad, but shallow, and subdivided into two by a slight ridge: the lateral of these two, transmits the tendon of the extensor carpi radialis longus muscle; the medial, the tendon of the extensor carpi radialis brevis muscle.

Jul 31, 2024 · The proximal radius comprises the articular radial head and, immediately distally, the radial neck and tuberosity. The radial shaft is thicker than the ulna and becomes thicker distally. It has a triangular cross section, with a lateral convexity, and a sharp medial (interosseous) border.

Jun 6, 2023 · The radius provides stability for the hinge joint at the elbow and allows for motion at the radiohumeral joint, but the ulna and humerus do most of the work there. There is some movement between the proximal ends of the radius and the …

Jul 22, 2023 · In the anatomical position, the ulna is situated medially, or closer to the body, whereas the radius is positioned laterally. As such, structures on the medial side of the forearm are often referred to as “ulnar,” while those on the lateral side are described as “radial.”

Distal radius fractures are one of the most common types of bone fractures. They occur at the end of the radius bone near the wrist. Depending on the angle of the break, distal radius fractures can be classified into two types: Colles or Smith. Falls are the main cause of distal radius fractures.

Medial surface: The medial surface of the lower end of the radius bone provides the ulnar notch for articulation with the head of ulna. Articular disc of inferior radio-ulnar joint is connected to the lower margin of ulnar notch.

The more lateral of the two long bones of the forearm is called the radius. It is able to rotate around the ulna due to their unique attachments at the proximal and distal radioulnar joints. The radius serves as an attachment site for many muscles that act on the forearm and hand.

1. a line radiating from a center, or a circular limit defined by a fixed distance from an established point or center. 2. in anatomy, the bone on the outer or thumb side of the forearm. grid radius grid focus.