Abstract
Development of a novel technique of arthroscopic rotator cuff repair which adapts the proven strong open technique using the Arthrex Post (low profile screw) into an arthroscopic technique by using the Arthrex Biotenodesis screw technique. The theoretical advantages of this technique are the ability to use stronger suture material, with a simple, tolerant, knotless and adaptable technique
Prior to use of this technique on patients we required laboratory confirmation of its benefit over present techniques. We have previous experience with laboratory testing at Exeter University using a MONSANTO TEN-SIOMETER for the previous Arthrex Post system. A similar experimental model was used for this study comparing two methods of fixation:
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standard arthroscopic technique with Corkscrew anchor to decorticated footprint area on fresh frozen porcine humerus.
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New technique with number 2 Ethibond to biotenodesis screw in metaphyseal area of fresh frozen porcine humerus
Initial results show a significant advantage of the biotenodesis technique with failure at over 1,000 N compared to 113N for a 2cm bone tunnel and 180N–600N for anchors. This shows promise for use in patients.
These abstracts were prepared by Mr Cormac Kelly. Correspondence should be addressed to him c/o British Orthopaedic Association, Royal College of Surgeons, 35-43 Lincoln’s Inn Fields, London WC2A 3PN.
