Reverse Shoulder Replacement vs Shoulder Replacement

Reverse shoulder replacement changes the joint mechanics for a deficient rotator cuff, while conventional shoulder replacement relies more on a working rotator cuff.

Reverse shoulder replacement places a ball on the shoulder blade side and a socket on the upper-arm side. This lets the deltoid muscle help lift the arm when the rotator cuff cannot provide its usual control. Conventional shoulder replacement preserves the usual ball-and-socket arrangement and is generally considered when the rotator cuff can centre and move the joint.

A reverse design may be discussed when severe arthritis exists alongside a torn or non-functioning rotator cuff, or when a previous shoulder operation has left the joint difficult to control. It can also be considered for some complex fractures or bone and tendon damage. The surgeon still needs to assess deltoid function, nerve health, bone quality, and the shoulder blade socket.

A conventional replacement may suit a painful, worn shoulder when the rotator cuff is intact or can work effectively. Preserving the familiar joint geometry may support a more natural movement pattern for suitable patients. Cuff tears, muscle weakness, deformity, previous surgery, and the extent of socket wear can change this discussion.

Both procedures involve risks such as infection, bleeding, nerve irritation, stiffness, fracture, instability, or loosening over time. Reverse replacement has design-specific concerns, including the ball or socket components moving out of position and irritation around the shoulder blade. Conventional replacement may perform poorly if the rotator cuff later becomes unable to control the joint. Rehabilitation, lifting demands, and the condition of the other shoulder affect the practical trade-off.

Replacement may not be the first step when pain is mainly coming from the neck, an unhealed fracture, infection, severe medical illness, or a shoulder that has not had appropriate non-surgical care. Physiotherapy, activity changes, medication advice, or treatment directed at another source of pain may come first. Imaging and examination help separate joint pain from tendon, nerve, and neck-related symptoms.

The assessment combines your pain pattern, active and passive movement, strength, stability, prior operations, work or sport demands, and goals. X-rays show arthritis, alignment, and bone loss; other imaging may clarify cuff tendons or complex anatomy. The recommendation should explain why the joint design matches your muscles and bone, what movement is realistic, and how rehabilitation will be paced.