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The role of graft materials in suture augmentation for tendon repairs and reattachment

โœ Scribed by Frederick J. Kummer; Kazuho Iesaka

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
149 KB
Volume
74B
Category
Article
ISSN
1552-4973

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โœฆ Synopsis

Abstract

Various biomaterials have been used to augment sutures for the repair and reattachment of tendons. This study examined four different graft materials in a simple and reproducible model using chicken Achilles tendons to determine the strength and mechanism of suture reinforcement of tendon repairs. The graft materials tested were Goreโ€Texยฎ Soft Tissue Patch, Graftjacketโ„ข, bovine pericardium, and an experimental graft material from Xylos Corporation. Testing was performed in shear to simulate forces on a torn tendon repair and pullโ€off to simulate those on a tendon reattachment to bone. Compared to unaugmented suture, grafts increased suture fixation strength from 10% to 60% in shear and from 0% to 36% in pullโ€off with the bovine pericardium graft, providing significant improvement in both tests. In no cases (even unaugmented) did the suture pull directly through the tendon, but instead sliced along it, demonstrating that the interface between the suture and the tendon determines fixation strength. Grafts function by increasing the area, friction, and nature of this interface, not by acting as a barrier for suture pullโ€through. ยฉ 2005 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2005

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