Optimization of Subscapularis Tendon Repair in Stemless Shoulder Arthroplasty Using a Resorbable Pressure-Dissipating Onlay Suture Disk Implant.

Abstract

Successful subscapularis repair in stemless shoulder arthroplasty is crucial to reduce complications and improve postoperative function. As stemless shoulder arthroplasty continues to grow in popularity, several subscapularis tendon repair techniques are being developed, with a current trend toward knotless devices and double-row anchor-based constructs. In this article, we present our technique for repair of a subscapularis tendon peel using a suture-capture construct that aids in compression of the tendon onto its footprint and then gradually releases the tension as the capture resorbs and tendon healing occurs. The suture-capture tissue repair technology uses a disk or button that pushes down a larger area of tissue onto the bone, eliminating gap formation between the bone and tendon; as the button's material degrades, compressive, shearing, and tensile forces are transferred to the tendon tissue to achieve complete remodeling of the repair.