An In Vitro Evaluation of Plate Luting Using Osteotomized Equine Third Metacarpal Bones with a Limited Contact-Dynamic Compression Plate.
In: Veterinary Surgery, Jg. 34 (2005-11-01), Heft 6, S. 587-593
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Zugriff:
Objectives To evaluate the effects of plate luting on the biomechanical properties of a broad limited contact-dynamic compression plate (LC-DCP) fixation to repair osteotomized equine 3rd metacarpal (MC3) bones. Study Design In vitro biomechanical testing of paired cadaveric equine MC3 with a mid-diaphyseal osteotomy, stabilized by LC-DCP fixation, with 1 of the pair luted with polymethylmethacrylate (PMMA). Animal Population Ten pairs of adult equine cadaveric MC3 bones. Methods Ten pairs of equine MC3 were divided into 2 test groups (5 pairs each) for (1) palmarodorsal 4-point bending single cycle to failure testing and (2) palmarodorsal 4-point bending cyclic fatigue testing. The LC-DCP (8 hole, 4.5 mm) was applied to the dorsal surface of each pair of MC3 bones. All plates and screws were applied using standard AO/ASIF techniques. All MC3 bones had mid-diaphyseal osteotomies. One of the matched pairs of LC-DCP-MC3 constructs were randomly chosen to be luted with PMMA. Mean test variable values for each method were compared using a paired t-test within each group; significance was set at P<.05. Results Mean palmarodorsal 4-point bending yield bending moment, failure bending moment of the LC-DCP fixation with luting was not significantly different ( P>.05) than those of the LC-DCP fixation without luting. Mean cycles to failure for palmarodorsal 4-point bending was significantly ( P<.0003) greater, with a 7.2-fold increase, for the LC-DCP fixation with luting compared with the LC-DCP fixation without luting. Conclusion Luting the broad LC-DCP with PMMA in the fixation osteotomized equine MC3 bones increases the fatigue life of cyclic loading for palmarodorsal 4-point bending under the in vitro conditions studied. Clinical Relevance The cyclic fatigue data supports the conclusion that luted broad LC-DCP fixation is biomechanically superior to the non-luted broad LC-DCP fixation in osteotomized equine MC3 bones. [ABSTRACT FROM AUTHOR]
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Titel: |
An In Vitro Evaluation of Plate Luting Using Osteotomized Equine Third Metacarpal Bones with a Limited Contact-Dynamic Compression Plate.
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Autor/in / Beteiligte Person: | Sod, Gary A. ; Hubert, Jeremy D. ; Martin, George S. ; Gill, Marjorie S. |
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Zeitschrift: | Veterinary Surgery, Jg. 34 (2005-11-01), Heft 6, S. 587-593 |
Veröffentlichung: | 2005 |
Medientyp: | academicJournal |
ISSN: | 0161-3499 (print) |
DOI: | 10.1111/j.1532-950X.2005.00091.x |
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