Abstract

This study concerns the general problem of the treatment of shoulder degenerative or traumatic lesions, based on total or partial joint replacement (shoulder arthroplasty). With baby boomers, increasingly complaining of shoulder pain, the number of shoulder arthroplasties increased by 15% each year. This surgical procedure is very difficult and limited to the expert centers. The two main challenges for this surgery are the minimal surgical incision and the limited access to the operated structures. Moreover, the success of such procedure is related to optimal prosthesis positioning. So far, the existing optimization and guiding systems are now very limited, which is no longer acceptable. Some mechanical systems may enhance the prosthetic components orientation but do not ensure an implant positioning taking into account the bone stock because it is not visible during the surgery. Only the preoperative evaluation on CT images could enhance the final gesture. To meet strong demand and meet the limitations of current solutions, we propose innovative approaches to build a navigation system easy to use and fully automatic for shoulder surgery.

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