@article {Robb:2005:0161-3499:499,
title = "In Vitro Evaluation of Screws and Suture Anchors in Metaphyseal Bone of the Canine Tibia",
journal = "Veterinary Surgery",
parent_itemid = "infobike://bsc/vsu",
publishercode ="bp",
year = "2005",
volume = "34",
number = "5",
publication date ="2005-09-01T00:00:00",
pages = "499-508",
itemtype = "ARTICLE",
issn = "0161-3499",
eissn = "1532-950X",
url = "https://www.ingentaconnect.com/content/bsc/vsu/2005/00000034/00000005/art00012",
doi = "doi:10.1111/j.1551-2916.2005.00075.x",
keyword = "suture anchor, Ethibond suture, biomechanical testing, Kevlar suture, IMEX™ anchors, BoneBiter™, cancellous screw, cortical screw, TwinFix™, bone, dog",
author = "Robb, Julie L. and Cook, James L. and Carson, William",
abstract = "Objective To compare ease of insertion, load to failure, and mode of failure of cortical and cancellous screws, BoneBiter, IMEX, and TwinFix suture anchors in canine metaphyseal tibial bone. Study Design Experimental biomechanical study. Animals Canine cadaveric tibias. Methods One investigator inserted all anchors and subjectively evaluated ease of placement. Anchor systems were loaded to failure along axis of insertion with audiovideo recording to determine failure mode. Results BoneBiter was the most difficult anchor to insert successfully. Mean\textpmSD loads to failure were cancellous screw (711\textpm193N), IMEX 4.7mm 18g wire (661\textpm163N), IMEX 4.0mm 18g wire (661\textpm165N), cortical screw (635\textpm184N), BoneBiter#5 Kevlar suture (393\textpm 109N), and TwinFix 5.0mm #2 polyester (267\textpm73N). No significant differences were noted among the cortical screw, cancellous screw, IMEX 4.7 and 4.0mm, all of which were significantly (P and TwinFix. Failure modes were pullout of bone, suturewire breakage, eyelet breakage, or no failure to 1000N: screws (18,0,0,2), IMEX (18,1,1,0), BoneBiter (2,8,0,0), and TwinFix (0,10,0,0). Conclusions Fixation devices were user friendly, with the exception of BoneBiter. Mode of failure is dependent on suture material and anchor design. Cortical and cancellous screws, and IMEX anchors with 18g wire have significantly greater load to failure compared with BoneBiter and TwinFix suture anchors. Clinical Relevance Based on load to failure, ease of use, design characteristics, and cost, IMEX anchors may have advantages over other comparable soft tissue fixation devices.",
}