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The DELTA XTEND™ Reverse Shoulder System is intended for use in total or hemi-shoulder arthroplasty procedures in patients with non-functional rotator cuffs, with or without bone cement. HA components are for cementless use only.

The DELTA XTEND™ Reverse Shoulder System is indicated for use in treatment of a grossly deficient rotator cuff joint with: severe arthropathy and/or; a previous failed joint replacement and/or: fracture-dislocations of the proximal humerus where the articular surface is severely comminuted, separated from its blood supply or where the surgeon's experience indicates that alternative methods of treatment are unsatisfactory The patient's joint must be anatomically and structurally suited to receive the selected implant(s), and a functional deltoid muscle is necessary to use the device. DELTA XTEND™ Reverse Shoulder System hemi-shoulder replacement is also indicated for hemi-arthroplasty if the glenoid is fractured intraoperatively or for the revision of a previously failed DELTA XTEND™ Reverse Shoulder System. The metaglene component is HA coated and is intended for cementless use with the addition of screws for fixation. All other metallic components are intended for cemented use only.

The DELTA XTEND™ Reverse Shoulder System is currently cleared and marketed by DePuy Synthes and is comprised of multiple humeral and glenoid implant components. These are provided as separate, standalone devices and may be used in conjunction to form a total shoulder prothesis. This submission is pertinent to only those system components which are HA coated: Humeral Implants: Modular humeral stems Modular epiphysis Glenoid Implants: Metaglenes

The provided text is a 510(k) Summary for the DELTA XTEND™ Reverse Shoulder System. It outlines the device, its intended use, and its substantial equivalence to previously cleared predicate devices.

However, the primary purpose of this submission (as stated in section 510(K) SUMMARY) is "to extend the current approved shelf life of 5 years to 10 years" of the DELTA XTEND™ Reverse Shoulder System.

Therefore, the performance data provided focuses solely on testing related to shelf-life extension, specifically regarding the HA coating on shelf-aged products. There is no information within this document about acceptance criteria or studies related to AI-powered medical devices, human reader improvements with AI assistance, or algorithm-only performance.

The document explicitly states:
"NO CLINICAL TESTS WERE CONDUCTED TO DEMONSTRATE SUBSTANTIAL EQUIVALENCE."

Therefore, I cannot provide the detailed information requested in your prompt regarding acceptance criteria, study details (sample sizes for test/training sets, data provenance), expert involvement, adjudication methods, MRMC studies, standalone performance, or ground truth establishment for an AI device, as this documentation pertains to a traditional medical device (shoulder replacement system) and not an AI/ML device.

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