he anatomy of the shoulder joint is unique and individual. Nowadays, it is possible to plan and design a specific guide for a given patient before surgery, which will help the surgeon when making the prosthesis.

To do this, it is necessary to request a CT scan and use a specific program that allows 3D reconstructions that will assist the surgeon in the correct and rigorous planning of the surgery.

These guides have been decisive and very important in patients with major anatomical alterations of the shoulder joint, allowing the correct positioning of the implants according to what was previously planned by the surgeon.