COMPARATIVE FATIGUE STRENGTHS AND STABILITIES OF METACARPAL INTERNAL-FIXATION TECHNIQUES

被引:47
作者
FIROOZBAKHSH, KK
MONEIM, MS
HOWEY, T
CASTANEDA, E
PIRELACRUZ, MA
机构
[1] Department of Orthopaedics and Rehabilitation, School of Medicine, University of New Mexico, Albuquerque, NM
来源
JOURNAL OF HAND SURGERY-AMERICAN VOLUME | 1993年 / 18A卷 / 06期
关键词
D O I
10.1016/0363-5023(93)90403-P
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
To study quantitative differences in the fatigue strength and stability obtained with 5 types of internal fixation of metacarpal fractures, 105 preserved human metacarpals were cyclically tested in bending, torsion, and axial loading after oblique osteotomies of the metacarpal and internal fixation. The dorsal plate with lag screw was superior in all modes, followed by the two dorsal lag screws, crossed Kirschner wire tension banding, and intramedullary Kirschner wire fixation. The five intramedullary and the paired intramedullary wire fixations were not statistically different. The fatigue life of the plate fixation was significantly larger in bending (1.5 times), torsion (1.6 times), and axial loading (2.5 times) than the second strongest fixation, two dorsal lag screws. Its initial rigidity was significantly higher in axial loading (1.5 times) but was not statistically different in bending and torison.
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页码:1059 / 1068
页数:10
相关论文
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