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• W2509590135 abstract "Summary Strong mechanical fixation is critical to the success of rotator cuff repairs. In this comparative study in cadaveric shoulders, single-tendon full-thickness supraspinatus tears were repaired using two different types of PEEK knotless suture anchors-ReelX STT (Stryker) and Opus Magnum PI (Arthrocare)-using a single-row technique in both instances. Cyclic testing was performed followed by loading until mechanical failure. No significant difference was observed in gap formation, measured as the distance between the supraspinatus tendon and bone at the repair site, during cyclic loading. However, the maximum load was statistically higher for repairs with the ReelX anchor. Purpose The objective of this study was to compare the gap formation during cyclic loading and maximum repair strength of single-row full thickness supraspinatus repairs performed using two different types of PEEK knotless suture anchors in a cadaveric model. Methods Nine matched pairs of cadaveric shoulders were used in this study. All soft tissue was removed except for the supraspinatus, and a full thickness tear was formed. Single-row repairs were performed with two anchors per repair using either the Opus Magnum PI (Arthrocare) or the ReelX STT (Stryker). The specimens were mounted to an Instron at 45° to simulate an anatomic direction of load, and fiducial markers were placed on the repair in anterior and posterior positions. A 10 N preload was applied and held for 60 seconds, and then the tendon was cycled from 10 N to 90 N at 0.25 Hz for 500 cycles, followed by load to failure at 1 mm/s. A video digitizing system was used to track the markers and measure gap formation during loading. Gap formation was calculated by subtracting the distance between the markers at 10 N preload from the maximum displacement at 5 and 500 cycles. Paired t-tests were used to compare the cyclic displacement and max load. Results One specimen from each of two matched pairs (one from each anchor group) failed during cyclic loading, leaving seven matched pairs for analysis. No significant difference was found in cyclic displacement between the two groups in either anterior or posterior positions at 5 and 500 cycles. However, maximum load to failure was significantly greater for repairs performed with the ReelX STT anchors (289N ± 57N) as compared to the OPUS anchors (178N ± 36N), with a p=0.009. Conclusions These results suggest that the anchor type chosen for cuff repairs may affect the overall stability of the repair. Achieving stable fixation is critical for promoting healing of the tendon back to bone and to the long-term success of the repair, and using anchors that provide stronger fixation may decrease the occurrence of post-surgical tears and instability. The ReelX STT anchor outperformed the Opus Magnum PI anchor in terms of supporting significantly higher loads before failure, potentially leading to stronger repairs clinically." @default.
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• W2509590135 date "2012-09-01" @default.
• W2509590135 modified "2023-09-23" @default.
• W2509590135 title "KNOTLESS SINGLE-ROW ROTATOR CUFF REPAIR: A COMPARATIVE BIOMECHANICAL STUDY OF TWO KNOTLESS SUTURE ANCHORS" @default.
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