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Types of Shoulder Replacement
Partial Shoulder Replacement
In a partial shoulder replacement, only one side of the shoulder joint is replaced. The partial shoulder replacement may be selected where there is significant damage to the humeral side (ball) of the shoulder while the glenoid remains relatively healthy. In a partial shoulder replacement the surfaces and cartilage of the humerus is removed and replaced with artificial surfaces (implants) while the Glenoid (cup) remains untouched.
The humeral implant consists of a metal ball that replaces the head of the humerus, with or without a stem that is secured into the upper arm bone (humerus).
Total (Anatomic) Shoulder Replacement
In total shoulder replacement surgery both the ball of the upper arm bone (humerus) and socket of the shoulder blade (glenoid) are replaced with specially designed components. The humeral implant consists of a metal ball that replaces the head of the humerus, with or without a stem that is secured into the upper arm bone (humerus).
The implants used by your surgeon are specially selected to best match the countour and shape of your shoulder. This allows your surgeon to closely replicate your natural shoulder and get the best personalised fit.
Reverse Shoulder Replacement
If your rotator cuff is damaged or insufficient to support a total anatomic shoulder replacement, your surgeon may consider a reverse shoulder replacement. A reverse shoulder replacement has similarities with traditional shoulder replacement, however, the parts of your shoulder that serve as the ball and socket are reversed; the “ball” is attached to your shoulder blade and the “socket” is attached to your upper arm.
This allows for your deltoid muscles to compensate for your damaged rotator cuff, resulting in increased stability, strength, and range-of-motion to your shoulder joint.

Patient Specific Shoulder Replacement: 3D Planning and 3D Printed Guides
Your surgeon may use 3D planning software to create an accurate and personalised model in which to plan your shoulder replacement. The software uses a CT scan to recreate your anatomy.
Your surgeon may also have Patient Specific Instrumentation (PSI) made, based on the 3D model of your anatomy. These instrumentation guides are designed to help your surgeon place your shoulder prosthesis in a position that is best suited to your specific bony anatomy.
Important Safety Information
As with any medical treatment, individual results may vary. The performance of shoulder replacement depends on age, weight, activity level, prior function and other factors. There are potential risks, and recovery takes time. Only an orthopaedic surgeon can advise if shoulder replacement is right for you. All surgery has risks. There are risks that are associated with the anaesthetic you will have ahead of your procedure.2
The following are frequent adverse events after shoulder arthroplasty:1
- Rotator cuff insufficiency
- Instability or dislocation
- Loosening of components
- Infection
- Fracture