What is a radiocarpal joint?
The radiocarpal joint is an anatomical name for articulation between the bone of the radius of the forearm and the carpal bones of the hand, more often known as the wrist. This articulation, which is classified as a synovial joint, is held together with ligaments and has a cavity filled with liquid and cartilage between bones, which are referred to as synovial capsules. Movements that can be made in the radiocarpal joint include aduction and kidnapping or inclination of hand from side to side on the wrist, as well as bending and bending the hand from the front backwards to the wrist. The radius is a long bone of the forearm whose distal or lower end meets the carpus bone in hand. These bones, scaphoid, lunate and triquetrum, form the so -called proximal series of carpus, a cluster of eight small bones under the tzapěstí. While Scaphid and Lunate come into contact with the bone of the radius in the radiocarpal joint, so the triquetrum actually does so only when the hand is aduted or tilted in the direction of the finger pinky. This joint between radius and carpal bones is referred toAs a condyloid or ellipsoid joint, which means that the concave surface of the radius curves around the adjacent convex surface of the carpus.
radiocarpal joint components can be classified as internal or outer to joint. The inner for the joint is a liquid filled with a fluid surrounded by a synovial membrane. This space between radius and carpus, which releases synovial fluid that fills and smears the joint, contains continuous with similar cavities between carpal bones. Also inside the membrane is a joint cartilage, which subsoil space so that the bones wipe directly against each other. This space is further penetrated by blood vessels that supply nutrients to the joint.
External to the radiocarpal joint are the ligaments of the wrist. The ligaments are mostly made of collagen, strong connective tissue fibers that connect bones and surround and protect the joint. Palmar Radiocarpá is on the palm of the wristligaments that run between radius and scaphoid, radius and madness and radius and trick. Similarly, the dorsal ligaments on the back of the wrist connect the radius to these bones on their opposite sides. Also, the outer to the radiocarpal joint is a large joint disk immediately next to the joint on the middle or pinky side of the wrist, between the distal or lower end of the ulna bone in the forearm and the triquetrum and the pisiform bones of the carpus.
by connecting the forearm with the hand allows the radiocarpal joint several movements on the wrist. The front of the front forearm on the side of the palm can bend or tie their hand while those on the back forearms on the dorsal side can stretch their hands or bend it back. Other forearm muscles can add or kidnap the hand to the wrist and tilt it in the direction of the thumb or pinky. More complex movements can be made by simultaneous movement of radiocarpal joint, Radioulnar joint and intermediate joints of the hand.