| A biomechanical assessment of repair versus nonrepair of sheep flexor tendons lacerated to 75 percent. | |
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MedLine Citation:
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PMID: 20189731 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: The benefit of repairing a 75% partial flexor tendon laceration remains controversial. The purpose of this study was to assess the degree of gap formation with and without repair when the 75% lacerated tendon is subjected to cyclic loading. Repair with only a peripheral suture was compared to that using a core and peripheral repair technique. METHODS: Sixteen deep flexor tendons from sheep hind limbs were lacerated to 75% of the tendon diameter. The cut tendons were loaded for 100 cycles from 3 N up to 30 N and then back to 3 N, at a rate of 0.2 Hz. Gap formation was measured at 0 and 100 cycles. Tendons were then randomized into 2 repair groups of 8 each: group 1 was repaired with only a simple, running peripheral suture (6-0 polypropylene monofilament), whereas group 2 was repaired with a modified Kessler core suture (4-0 silicone-coated braided polyester) plus a peripheral suture (6-0 polypropylene monofilament). Repaired tendons were tested for 500 cycles, and the gap was measured at 0, 100, and 500 cycles. After cycling, gap was measured at 100 N load, and the peak loads were determined on static failure testing. RESULTS: The 75% partially lacerated tendons had >2 mm gap at 100 cycles. This gap was significantly reduced by peripheral or peripheral plus core repairs (p < .001). There was no difference in gap formation between tendons with peripheral repair only and those with both peripheral and core repairs. Gap formation in repaired tendons remained <or=1 mm at 500 cycles. After cycling, neither gap formation at 100 N load or the peak loads on failure testing differed between the 2 repair groups. CONCLUSIONS: There is a large gap when an unrepaired 75% partial laceration is cyclically loaded. This gap is significantly reduced with a peripheral repair whether or not a core suture is used. |
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Authors:
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Roger Haddad; Peter Scherman; Tim Peltz; Sean Nicklin; William R Walsh |
Publication Detail:
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Type: Comparative Study; Journal Article Date: 2010-03-02 |
Journal Detail:
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Title: The Journal of hand surgery Volume: 35 ISSN: 1531-6564 ISO Abbreviation: J Hand Surg Am Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-03-31 Completed Date: 2010-07-15 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7609631 Medline TA: J Hand Surg Am Country: United States |
Other Details:
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Languages: eng Pagination: 546-51 Citation Subset: IM |
Affiliation:
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Surgical and Orthopaedic Research Laboratories, University of New South Wales, Prince of Wales Hospital, Sydney, Australia. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Biomechanics Hindlimb Lacerations / surgery* Random Allocation Sheep Stress, Mechanical Suture Techniques Tendon Injuries / surgery* Tenodesis / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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