Question

what is ball and socket joints ? longer answer ​

Answer 1

The ball and socket joint is a type of synovial joints in which one bone is hooked into the hollow space of another bone. This type of joint helps in rotatory movement. An example ball and socket joint are the shoulders. The distal bone is capable of motion around an indefinite number of axes, which have one common centre. It enables the bone to move in many places.

Examples

1. The hip joint, where the rounded head of the femur (ball) rests in the pelvis’s cup-like acetabulum (socket).
2. The shoulder joint, where the rounded head of the humerus (ball) rests in the cup-like glenoid fossa (socket) of the shoulder blade.

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Answer 2

Answer :

Ball and socket joints are a type of synovial joint where the spheroid articular surface of one bone sits within a cup-like depression of another bone.

Movements

The ball and socket configuration allows for movement with 3 degrees of freedom, which is more than any other type of synovial joint. The depth of the cup and any additional fibrocartilaginous labrum is the major limitation to the extent of motion allowed in any direction.

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