髓内针对用接骨板固定的猫科动物髂骨骨折模型稳定性影响的生物力学评估
Biomechanical evaluation of the influence of an intramedullary pin on the stability of a feline ilial fracture model stabilized with a bone plate.
作者信息
Krebs Renee C, Roe Simon C, Lascelles B Duncan X, Marcellin-Little Denis J, Trumpatori Brian J, Spodnick Gary
机构信息
Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina.
出版信息
Vet Surg. 2014 Feb;43(2):114-9. doi: 10.1111/j.1532-950X.2013.12091.x. Epub 2013 Dec 23.
OBJECTIVE
To compare the mechanical properties of feline ilial fractures stabilized with either a plate (P), or a plate and IM pin (P + P).
STUDY DESIGN
Mechanical study.
SAMPLE POPULATION
Cadaveric cat pelvii (n = 10).
METHODS
Feline ilial fractures (n = 20) stabilized with either P or P + P were subjected to 100 nondestructive load cycles, then loaded to failure. Deformation after cycling, yield load and displacement, stiffness and load at 2 mm of displacement were compared between groups.
RESULTS
There were no significant differences between groups for any of the parameters. Variability of data was much larger for the P + P group.
CONCLUSIONS
No biomechanical advantage was demonstrated. The P + P constructs were not significantly stronger than plates alone in this acutely loaded cadaveric model.
目的
比较用钢板（P）或钢板加髓内针（P + P）固定的猫科动物髂骨骨折的力学性能。
研究设计
力学研究。
样本群体
尸体猫骨盆（n = 10）。
方法
用P或P + P固定的猫科动物髂骨骨折（n = 20）进行100次无损加载循环，然后加载至失效。比较两组之间循环后的变形、屈服载荷和位移、刚度以及位移2mm时的载荷。
结果
两组之间的任何参数均无显著差异。P + P组的数据变异性要大得多。
结论
未显示出生物力学优势。在这个急性加载的尸体模型中，P + P结构并不比单独使用钢板明显更强。
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