Evaluation of the Healicoil Suture Anchor for Rotator Cuff Repair

A great deal of research has been devoted to determining optimal techniques for rotator cuff repair, a common orthopedic procedure. Current repair techniques involve the use of suture anchors or transosseous tunnels, with the goal of reattaching the torn tendon to the anatomic insertion of the rotator cuff. There are a multitude of different repair constructs and anchor designs available. For example, some surgeons utilize a single row of suture anchors for repair, whereas others will use two rows of anchors in a "double row" construct. A variety of anchors are also available; some are loaded with suture and require knot tying, and others can be used in a "knotless" technique. Regardless, time zero stability of the rotator cuff repair is essential, but ideal anchor or construct has yet to be determined.

Time zero stability immediately after the rotator cuff repair is important, however, contemporary research has also focused on the cascade that influences biologic healing of these rotator cuff repairs and if augmentation can improve functional results. Specifically, various authors have looked at the cytokines, growth factors and stem cells involved in the process. The question remains of what role these factors play and whether there are techniques that can facilitate their use and improve healing of rotator cuff repairs. Data exists in a animal models that does show that some of these growth factors can improve tendon healing.

Research Plan:

The proposed study will be a prospective randomized trial of 40 patients undergoing arthroscopic repair of full thickness rotator cuff tears. Patients will be randomized to one of two groups; the Healicoil anchor vs standard 5.5 PEEK anchor. Follow-up will take place at 6 weeks, 6 months, and 1 year after rotator cuff repair.

At the time of the operative procedure bone marrow aspirate from the drill hole used for the anchors will be sent for analysis. At the 6 month mark patients will get a computer tomography (CT) scan in order to determine the amount of ingrowth within the anchor. Finally, the outcome scores within the first year will be recorded. This data will result in the publication of three separate studies.