Principal Investigator: Nicholas J. Giori, MD, PhD Objectives: Suture anchors are commonly used to repair soft tissues to bone. One common application is in rotator cuff repairs. Suture anchor fixation may fail if the anchor pulls out of the bone. One potential solution is to use bone cement to help fix the anchor to the bone. In this study, we investigate whether cementing a suture anchor in bone with PMMA bone cement augments suture anchor fixation under cyclical loading. Work Accomplished: Suture anchors were placed into matched cadaveric humeri. On one side, anchors were placed without cement. On the other side, anchors were placed with cement. The suture anchors were then pulled out of the bone on a servohydraulic testing machine with cyclical loading using increasing loads. With our specific loading protocol, we found that cementing a suture anchor with PMMA bone cement increases the number of cycles to failure by 31-34% and increases the maximum load carried by the anchor by 71-111%. Expected Outcome: Based on the findings of this study, we expect suture anchor fixation to be augmented by PMMA bone cement more frequently in clinical practice, and that suture anchor fixation failure by anchor pull out to become an increasingly rare complication. Publications Sohn DH, Mirza FM, Lindsey DP, Lee AT, Giori NJ: Bone Cement Improves Suture Anchor Fixation. Proc Amer Acad Orthop Surg 72:P246, 2005. Giori NJ, Sohn DH, Mirza FM, Lindsey DP, Lee AT: Bone cement improves suture anchor fixation. Clin Orthop 2006 Oct;451:236-41. Funding Source: No outside funding
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