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The ROSA® Shoulder System, for use with the ROSA RECON platform, is indicated as a stereotaxic instrumentation system for Total Shoulder Arthroplasty (TSA) surgery. It is used to assist the surgeon in providing software-defined spatial boundaries for orientation and reference to identifiable anatomical structures for the accurate placement of the shoulder implant components. The robotic arm placement is performed relative to anatomical landmarks and bony anatomy as recorded using the system intraoperatively, and based on a three-dimensional representation of the bone structures determined pre-operatively using compatible CT based imaging technology. It includes a robotic arm, an optical sensor navigation system and accessories, software system, surgical instruments and accessories. The ROSA® Shoulder System is designed for use on a skeletally mature patient population. The target population has the same characteristics as the population targeted by the implants compatible with the ROSA® Shoulder System. The ROSA® Shoulder System is to be used with the following shoulder replacement systems in accordance with their indications and contraindications: • Humerus implants: Comprehensive® Total Shoulder System, Comprehensive® Reverse Shoulder System, Identity® Shoulder System and Identity® Reverse Shoulder System. • Glenoid implants: Alliance™ Glenoid and Comprehensive® Reverse Shoulder System.

The ROSA® Shoulder system (RSS) for use with ROSA® RECON Platform (cleared via K230243) is used to assist surgeons in performing Total Shoulder Arthroplasty (TSA) for both anatomic and reverse techniques. It features humeral resection and glenoid reaming capabilities to reproduce the preoperative plan intraoperatively with The RSS uses a Non-Device Medical Device Data System (MDDS) called the Zimmer Biomet Portal, which manages the creation and tracking of surgical cases. The cases with the pre-operative planning based on surgeon preferences reside on the portal until they are uploaded to the ROSA RECON Platform before surgeries. The intra-operative workflow and surgical concepts implemented in the system remain close to the conventional TSA workflow. As such, at the time of the surgery, the system mainly assists the surgeon in (1) determining reference alignment axes in relation to anatomical landmarks, (2) planning the orthopedic implants location intra-operatively based on these reference alignment axes and orthopedic implant geometry, and (3) precisely position the humeral cut guide and glenoid reamer relative to the planned orthopedic implant location by using a robotic arm.