the ball and socket joint is located at the shoulder in the lower part of the body.
the ball and socket joint is located at the shoulder in the lower part of the body.
where is the ball and socket joint located in the lower part of the body?
shoulder
the hip is essentially a ball and socket joint. it consists of the head of the femur (the ball) and the acetabulum (the socket). both the ball and socket are congruous and covered with hyaline (or articular) cartilage, which allows smooth, almost frictionless gliding between the two surfaces. the edge of the acetabulum is surrounded by the "acetabular labrum", a fibrous structure that envelops the femoral head. (see fig. 1) the labrum acts as a seal, or gasket, around the femoral head. however, this is not its only function, as it has been shown to contain nerve endings, which may cause pain if damaged. the blood supply of the labrum has also been demonstrated. the joint itself is encompassed by a thick, fibrous joint capsule, which is lined by synovium. the ligaments that keep the hip joint in place are in fact, thickened areas of joint capsule, rather than distinct structures. the synovium generates fluid that lubricates the joint; in that fluid are the nutrients needed to keep the cartilage cells alive. a total of 27 muscles cross the hip joint, making it a very deep part of the body for arthroscopic access. this is one reason why hip arthroscopy can be quite technically demanding.
hip arthroscopy
ball-and-socket joint









































the ball and socket joint (or spheroid joint) is a type of synovial 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 places (nearly all directions).









































an enarthrosis is a special kind of spheroidal joint in which the socket covers the sphere beyond its equator.









































section::::examples.
ball-and-socket joint