the only type of articulation with a joint cavity is a synovial joint.
the only type of articulation with a joint cavity is a synovial joint.
the only type of articulation with a joint cavity is a?
synovial joint
joint manipulation is characteristically associated with the production of an audible 'clicking' or 'popping' sound. this sound is believed to be the result of a phenomenon known as cavitation occurring within the synovial fluid of the joint. when a manipulation is performed, the applied force separates the articular surfaces of a fully encapsulated synovial joint. this deforms the joint capsule and intra-articular tissues, which in turn creates a reduction in pressure within the joint cavity. in this low pressure environment, some of the gases that are dissolved in the synovial fluid (which are naturally found in all bodily fluids) leave solution creating a bubble or cavity, which rapidly collapses upon itself, resulting in a 'clicking' sound. the contents of this gas bubble are thought to be mainly carbon dioxide. the effects of this process will remain for a period of time termed the 'refractory period', which can range from a few minutes to more than an hour, while it is slowly reabsorbed back into the synovial fluid. there is some evidence that ligament laxity around the target joint is associated with an increased probability of cavitation.
joint manipulation
the cavity of the midcarpal joint is very extensive and irregular. the major portion of the cavity is located between the distal surfaces of the scaphoid, lunate, and triquetrum and proximal surfaces of the four bones of the distal row. proximal prolongations of the cavity occur between the scaphoid and lunate and between the lunate and triquetrum. these extensions reach almost to the proximal surface of the bones in the proximal row and are separated from the cavity of the radiocarpal joint by the thin interosseous ligaments. there are three distal prolongations of the midcarpal joint cavity between the four bones of the distal row. the joint space between trapezium and trapezoid, or that between trapezoid and capitate, may communicate with cavities of the carpometacarpal joints, most commonly the second and third. the cavity between the first metacarpal and carpus is always separate from the midcarpal joint; the joint cavity between the hamate and fourth and fifth metacarpals is a separate cavity more often than not, but it may communicate normally with the midcarpal joint.
midcarpal joint