Shoulder joint replacement, also known as shoulder arthroplasty, is a surgical procedure in which the damaged parts of the shoulder joint are removed and replaced with artificial components called a prosthesis.

Types of Shoulder Replacements

Total Shoulder Replacement: This is the most common type where both the ball (head of the humerus bone) and the socket (glenoid) are replaced with prosthetic components – a metal ball and a plastic socket.

Hemiarthroplasty: Only the ball (head of the humerus) is replaced with a metal ball, while the socket remains intact. This is done when the socket has minimal damage.

Reverse Total Shoulder Replacement: Used for severe rotator cuff injuries or failed previous replacements. The ball and socket are reversed – the socket is replaced with a ball, and the upper humerus has a socket implanted.

Reasons for Shoulder Replacement

The main reasons for undergoing shoulder replacement include:

• Severe arthritis (osteoarthritis, rheumatoid arthritis) causing pain and limited mobility
• Fractures or severe shoulder injuries
• Rotator cuff tear arthropathy (severe rotator cuff tears with arthritis)

Procedure

The damaged bone and cartilage are removed, and the prosthetic components are implanted using cement or a press-fit technique. The surgery typically takes 2-3 hours under anesthesia.

Recovery

• Physical therapy begins the day after surgery to regain range of motion and strength.
• Full recovery: 2-6 months, with continued physical therapy
• Potential complications: infection, nerve damage, dislocation, component loosening over time

Overall, shoulder replacement surgery is highly effective in relieving pain and restoring mobility for patients with severe shoulder joint damage, with a high satisfaction rate.