Which of the following is a/are ball-and-socket joint/s in human body?
A
Shoulder Joint
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B
Hip Joint
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C
Knee Joint
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D
Both A and B
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Solution
The correct option is D Both A and B
A hinge joint is a common class of synovial joint formed between two or more bones where the bones can only move along one axis to flex or extend. Maximum rotation in hinge joint is up to 180 degrees.
The ball and socket joint also called as the spheroidal joint is a joint in which the ball-like rounded surface of a bone moves within a cup-like depression on another bone, this allows greater freedom of movement (full circle) than any other kind of joint.
As evident from the above figure, the shoulder joint and the hip joint are of ball and socket type. Whereas, the elbow, knee and ankle joints are hinge joints.