A typical shoulder replacement device resembles the shoulder's natural anatomy: A metal ball is fastened to the top of the upper arm bone, and a plastic cup is inserted into the shoulder socket (glenoid) (humerus).

The socket and metal ball are reversed during a reverse complete shoulder replacement. The plastic cup is fastened to the top of the humerus, and the metal ball is fixed to the socket.

These muscles stop working in a patient with a significant rotator cuff tear and cuff tear arthropathy. The deltoid muscle is used in the reverse complete shoulder replacement in place of the rotator cuff to propel and position the arm. It essentially recreates the injured rotator cuff's functionality.

• It typically takes two hours to replace your shoulder joint with an artificial device.
• The metal ball that is put into the shoulder socket and the plastic cup anchored into the upper arm bone are the two parts of a reverse total shoulder replacement.
• The femur head is covered with metal rather than being removed. A metal socket is used in place of the original.

The hip joint's damaged bone tissue and cartilage are removed by the surgeon during hip replacement. The hip's healthy areas are unaltered. The surgeon will then insert new, synthetic components into the acetabulum (the socket) and the head of the femur (the ball). The materials used to construct the new hip permit a smooth, natural motion of the joint. An average hip replacement procedure takes two to three hours.