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Joints of the hand, X-ray. The bones in each carpal row interlock with each other and each row can therefore be considered a single joint. In the proximal row a limited degree of mobility is possible, but the bones of the distal row are connected to each other and to the metacarpal bones by strong ligaments that make this row and the metacarpus a functional entity.
The wrist (Latin: carpus), [5] composed of the carpal bones, articulates at the wrist joint (or radiocarpal joint) proximally and the carpometacarpal joint distally. The wrist can be divided into two components separated by the midcarpal joints. The small movements of the eight carpal bones during composite movements at the wrist are complex to ...
The ell as a measure was taken as six handbreadths; three to the elbow and three from the elbow to the shoulder. [41] Another measure was the cubit (from cubital). This was taken to be the length of a man's arm from the elbow to the end of the middle finger. [42]
In practice, the bones of the forearm and, eventually, the shoulder are the focus of the lock. If performed correctly, this technique will break the opponents wrist, elbow and dislocate the shoulder. In practice, uke will turn over his own arm in order to prevent his wrist from breaking. The goal of almost all throws executed via joint/bone ...
Joints of the hand, X-ray Interphalangeal ligaments and phalanges. Right hand. Deep dissection. Posterior (dorsal) view. The PIP joint exhibits great lateral stability. Its transverse diameter is greater than its antero-posterior diameter and its thick collateral ligaments are tight in all positions during flexion, contrary to those in the metacarpophalangeal joint.
The distal part of the upper limb between the elbow and the radiocarpal joint (wrist joint) is known as the forearm or "lower" arm, and the extremity beyond the wrist is the hand. By anatomical definitions, the bones , ligaments and skeletal muscles of the shoulder girdle , as well as the axilla between them, are considered parts of the upper ...
elbow (between the humerus and the ulna) These joints act as a door hinge does, allowing flexion and extension in just one plane, i.e. uniaxial. Pivot joints: atlanto-axial joint, proximal radioulnar joint, and distal radioulnar joint: One bone rotates about another Condyloid joints (or ellipsoidal joints) wrist joint (radiocarpal joint)
The ulna or ulnar bone (pl.: ulnae or ulnas) [3] is a long bone in the forearm stretching from the elbow to the wrist. It is on the same side of the forearm as the little finger, running parallel to the radius, the forearm's other long bone. Longer and thinner than the radius, the ulna is considered to be the smaller long bone of the lower arm.