Eligible patients will be randomized into one of two study groups at the time of surgery. Enrollment will continue until 20 patients are in each group. Participants in the control group will undergo rotator cuff repair utilizing 5.5mm full thread Twinfix PK anchors for tendon fixation. Those in the experimental group will undergo the same procedure, but with the use of Smith & Nephew Healicoil anchors. Participants will be blinded as to the anchor-type received.