The ball and socket joint (or spheroidal joint) is a joint in which the ball-shaped surface of one rounded bone fits into the cup-like depression of another bone. The distal bone is capable of motion around an indefinite number of axes, which have one common center. It enables the bone to move in many planes (almost all directions). An enarthrosis...
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http://en.wikipedia.org/wiki/Ball_and_socket_joint
in vertebrate anatomy, a joint in which the rounded surface of a bone moves within a depression on another bone, allowing greater freedom of movement ... [2 related articles]
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http://www.britannica.com/eb/a-z/b/12
Hip joint A type of joint that allows one part to rotate at almost any angle with respect to another. Ball-and-socket joints occur naturally, as in the human hip and shoulder joints, and are also used in machinery. Of all diarthrodial (fully moveable) joints in the body, ball-and-socket joints ...
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http://www.daviddarling.info/encyclopedia/B/ball-and-socket_joint.html
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. ... Synonym: articulatio spheroidea, articulatio cotylica, cotyloid joint, enarthrodial joint, enarthrosis, socket joint, spheroid articulation, spheroid joint. ... (05 Mar 2000) ...
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a synovial joint in which the rounded or spheroidal surface of one bone (the “ball”) moves within a cup-shaped depression (the “socket”) on another bone, allowing greater freedom of movement than any other type of joint. Called also polyaxial or spheroidal joint.
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The area where the rounded end of one bone fits into a cavity in an adjoining bone. Ball-and-socket joints allow a wide range of movement, or flexion. For example, ball-and-socket joints of the shoulder and hip can rotate in a complete circle.
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Type: Term Definitions: 1. 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. Synonyms: articulatio spheroidea, enarthrosis, spheroidal joint, articulatio cotylica, cotyloid joint, enarthrodial joint, socket joint, spheroid articulation &n.....
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http://www.medilexicon.com/medicaldictionary.php?t=46300
Ball-and-socket joint: A ball-and-socket joint is one in which the round end of a bone fits into the cavity of another bone. The hip joint is a ball-and-socket joint.
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The most freely movable type of synovial joint(e.g., the shoulder or hip joint).
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http://www.mhhe.com/biosci/abio/glossary.mhtml
[
n] - a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone 2. [n] - a joint that can rotate within a socket
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http://www.webdictionary.co.uk/definition.php?query=ball-and-socket%20joint
A joint that allows wide range of movement, such as at the shoulder and hip
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https://sciencetrek.org/sciencetrek/topics/skeletons/glossary.cfm
a joint consisting of a ball-shaped bone that fits into a cup-shaped bone, making the joint free to rotate; examples include the hip and shoulder
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https://www.encyclo.co.uk/local/20875
noun a joint that can rotate within a socket
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https://www.encyclo.co.uk/local/20974
Joint between bones that allows considerable movement in three dimensions, for instance the joint between the pelvis and the femur (hip joint). To facilitate movement, such joints are rimmed with cartilage and lubricated by synovial fluid. The bones are kept in place by ligaments and moved by muscles
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