the joints of the hips and shoulders are examples of
Ball and socket joint Examples of this form of articulation are found in the hip, where the rounded head of the femur (ball) rests in the cup-like acetabulum (socket) of the pelvis, and in the glenohumeral joint of the shoulder, where the rounded head of the humerus (ball) rests in the cup-like glenoid fossa (socket) of the shoulder blade.[2] It should be noted that the shoulder includes a sternoclavicular articulation joint.
Hip The hip region is located lateral and anterior to the gluteal region (i.e., the buttock), inferior to the iliac crest, and overlying the greater trochanter of the femur, or "thigh bone".[2] In adults, three of the bones of the pelvis have fused into the hip bone or acetabulum which forms part of the hip region.