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# Catalyst OrthoScience Shoulder System Cleared
- URL: https://www.fdaweb.com/catalyst-orthoscience-shoulder-system-cleared/
- Published: 2021-03-17T12:00:00.000Z
- Updated: 2026-09-14T16:51:09.000Z
- Author: David McFarland
- Tags: Devices, #legacy-id-D5148903

FDA has cleared a Catalyst OrthoScience 510(k) for its reverse shoulder system. The total shoulder prosthesis is designed for patients experiencing severe shoulder arthritis in conjunction with a grossly deficient or non-functional rotator cuff, the company says. “In a reverse shoulder system, the design is inverted compared to a traditional anatomic total shoulder prosthesis where the articulating sphere is on the glenoid side of the joint and the mating insert is fixed into the humeral stem implant,” the company says.

The reverse shoulder is a single-tray arthroplasty system that offers surgeon-targeted implant positioning, and bone sparing implants, according to Catalyst. It features a stemless, ellipsoid humeral component that is engineered to accurately replace the elliptical shape of the patient’s native non-spherical humeral head, it says.