ball and socket joint

(redirected from socket joint)
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Related to socket joint: pivot joint, hinge joint

ball and sock·et joint

a multiaxial synovial joint in which a more or less extensive sphere on the head of one bone fits into a rounded cavity in the other bone, as in the hip joint.

ball-and-socket joint

The most freely movable type of synovial joint, in which the ball-like end of one bone (e.g., the humerus, femur) is surrounded by a spherical cartilaginous encasement, or “socket” (e.g., hip joint), or a group of structures that act as a functionally spherical encasement (e.g., shoulder joint), which allows free mobility of the articulating bone.
References in periodicals archive ?
Pistons and bores form displacement chambers, and each piston has a ball and socket joint that links it with a slipper.
With his invention, he became the father - simultaneously - of task lamps and of the universal ball and socket joint that is still in use today.
This is where the ball and socket joint becomes malformed during the first year of life.
The external surface of the housing and the internal surface of the support pedestal are spherical, creating a swivelling socket joint which accepts up to +/-3[degrees] of static misalignment and ensures that the seals always remain concentric to the shaft.
That could be the artificial ball joint at the top of the upper arm (humerus) or the socket joint it connects to in the scapula.
Another great point: "Snakes do not 'dislocate' their jaws, a process that would render them useless, they articulate them on the ball and socket joint where the jaw is hinged on the skull.
When the surgeon moves his arm left or right, the gimbal system (a ball and socket joint connected to the four cables that go out to the tip of the device) rotates and articulates the arms at the front end articulate.
NEARLY every joint in the body has been subjected to arthroscopy or keyhole surgical treatment, therefore keyhole surgery for the hip joint, which is the largest and most load bearing ball and socket joint in body, does not come as a surprise, although it is a relatively new phenomenon.
This condition is best treated by removing the affected femoral head and neck, or the ball part of the hip's ball and socket joint.
The researchers at Rush found that 78 percent of athletes suffering from hip labral tear caused by internal ball and socket joint damage to the hip were able to return to their sport within an average of a little more than nine months following the surgery.
The patient had been operated on for a broken femur five months before and this time X-rays revealed fractures to the neck of femur - the ball and socket joint at the top of the leg - and also the proximal tibia - the flat section at the top of the shin bone.
An operation to treat hip pain as a result of arthritis, a progressive disease which wears away the smooth cartilage lining of the hip's ball and socket joint.