Rotator Cuff Repair with REGENETEN Bioinductive Implant

Overview

REGENETEN is a resorbable collagen implant placed on the cuff to augment a repair or induce tissue growth over a partial tear. It is FDA-cleared as a Class II mesh, not approved through a clinical-efficacy pathway. Trial evidence shows it reduces retear on MRI, but patients getting it did not report better function than those who didn't.

That gap between imaging and patient-reported results is the central honest tension on this page, and it is covered in detail below (FDA 510(k) K222501).

How Dr. Raffo Performs This Procedure

For augmentation of a standard repair, the implant is applied over the top of the repaired tendon after the primary suture-anchor fixation is complete, typically secured with a small number of additional anchors or sutures so it sits directly on the bursal surface of the cuff. For standalone use in a partial-thickness tear, the implant is placed directly onto the intact bursal surface without taking down or repairing the tendon itself, and it is meant to stimulate new tissue growth into the existing tendon over the following months. In both settings, the implant is resorbable and is not visible on imaging as a foreign material once incorporation occurs; what is tracked on follow-up MRI is tendon thickness and continuity.

Who Is This For?

REGENETEN is most often used in two settings in this practice: as an augmentation added to a standard suture-anchor repair of a full-thickness tear, and as a standalone treatment placed over a partial-thickness tear that doesn't yet meet the threshold for a formal takedown-and-repair. It is not a substitute for a real repair in a large, retracted, full-thickness tear — the implant is a tissue-inductive scaffold, not a load-bearing construct, and it has not been studied as a way to avoid repairing a tear that needs repairing.

Reasonable candidates include patients with a repairable full-thickness tear where the surgeon wants additional biologic support for the repair, and patients with a high-grade partial-thickness tear whose tendon has not yet failed enough to require takedown and repair. It is not appropriate for patients being counseled about a massive or chronic tear with poor tissue quality, and it should not be sold to a patient as a way to guarantee a better-feeling shoulder — the evidence doesn't support that claim yet. Dr. Raffo discusses this option with patients from across Montgomery County, including Bethesda and Germantown, as part of a broader conversation about surgical and biologic options for cuff tears.

Recovery & Rehabilitation

Recovery after a REGENETEN-augmented repair follows the same general timeline as a standard rotator cuff repair, because the implant does not change the fundamental biology of tendon-to-bone healing or the need to protect the repair during that process. Most patients wear a sling for four to six weeks, begin passive motion early, and progress to active motion and strengthening over the following two to three months, reaching functional strength by four to six months in most cases (OrthoInfo: Rotator Cuff Tears — Surgical Treatment Options). When the implant is used standalone over a partial-thickness tear without a formal repair, the protocol is typically less restrictive, since there is no anchor-based repair construct to protect, but the tendon still needs time to incorporate the new collagen scaffold — imaging in one study showed continued tendon thickening out to two years (Schlegel, JSES 2021).

Recovery milestones:

• Weeks 0–6: Sling protection; passive range of motion started, following the same protocol as the underlying repair.
• Weeks 6–8: Progression to active-assisted and active motion.
• Weeks 8–12: Strengthening program begins.
• Months 4–6: Functional motion and strength typically restored.
• Up to 2 years: Continued tendon remodeling and thickening on imaging has been documented out to two years in implant-augmented partial-thickness tears (Schlegel, JSES 2021).

Biologics Used