APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The socket is very shallow and smaller than the ball, therefore the joint is inherently less stable than a true ball and deep socket, such as the hip joint.

Detailed explanation-2: -There are some differences between these joints that influence the treatment for injuries and painful conditions. The hip is much more constrained or inherently stable than the shoulder. The hip obviously is a “weight bearing joint” unlike the shoulder which introduces many differences.

Detailed explanation-3: -From the above-mentioned ratios, the hip is more stable than the shoulder joint. The greater mobility of the shoulder increases instability and the risk of dislocation. Another parameter that plays a role in joint stability pertaining to the bony factor is the curvature of articular surfaces.