Implantation of Reverse Shoulder Endoprothesis Using Navigation.

The implantation of a reverse shoulder arthroplasty (RSA) is a proven method for pain relief and improvement in shoulder function. Results vary, depending on the patient's age, the severity of the disease, and the experience of the surgeon. Indications for RSA are diverse, ranging from rotator cuff arthropathy to fractures. Recent studies show improved survival rates and reduced complications after primary implantation. Preoperative planning using 3D-CT or MRI is considered to be the gold standard. Patient-specific instruments (PSI) have been introduced, but are associated with costs and waiting times. Navigation with augmented reality (AR) provides a more efficient alternative. The intraoperative transfer of the plan to the patient is carried out via AR glasses, allowing real-time information without having to divert the surgeon's attention from the surgical site. This optimises the workflow and potentially yields more precise implantation results. In summary, the combination of 3D planning, navigation, and AR offers a promising method for precise and efficient RSA-implantations. Nevertheless, long-term results and functional scores are not yet available.