Ball and socket joint 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. Examples of this form of articulation are found in the hip, where the round head of
Hip dysplasia (canine) troublesome or when arthritis is severe. Hip modification surgeries such as these usually result in reduction of hip function in return for improved quality of life, pain control, and a reduction in future risk. Hip replacement has the highest rate of success, especially in severe cases, since it completely replaces the faulty joint. It usually restores complete mobility if no other joint is affected, and also completely prevents recurrence. Hip replacement for dogs, can sometimes also be a preferred clinical option for serious dysplasia in animals over about , a weight that excludes certain other surgical treatments. Other options under