[1]白正发 郇科△ 王晓波 张飞 吴卓.磷酸钙骨水泥强化空心螺钉固定股骨颈骨折的生物力学分析[J].中国中医骨伤科杂志,2017,25(06):29-32.
　BAI Zhengfa HUAN Ke WANG Xiaobo ZHANG Fei WU Zhuo.Biomechanical Analysis of Cannulated Screws Combined with Calcium Phosphate Cement in the Treatment of Femoral Neck Fracture[J].Chinese Journal of Traditional Medical Traumatology & Orthopedics,2017,25(06):29-32.
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磷酸钙骨水泥强化空心螺钉固定股骨颈骨折的生物力学分析()
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《中国中医骨伤科杂志》[ISSN:1005-0205/CN:42-1340/R]

卷:
第25卷
期数:
2017年06期
页码:
29-32
栏目:
临床研究
出版日期:
2017-07-08

文章信息/Info

Title:
Biomechanical Analysis of Cannulated Screws Combined with Calcium Phosphate Cement in the Treatment of Femoral Neck Fracture
文章编号:
1005-0205(2017)06-0029-04
作者:
白正发1 郇科1△ 王晓波1 张飞1 吴卓1
1.陕西省第四人民医院脊柱外科(西安,710043)
△.通信作者 E-mail:Iwbjb5000@163.com
Author(s):
BAI Zhengfa1 HUAN Ke1△ WANG Xiaobo1 ZHANG Fei1 WU Zhuo1
1.Department of Spine Surgery,The Fourth Hospital of Shaanxi Province,Xi'an 710043,China.
关键词:
磷酸钙骨水泥强化;  空心螺钉;  股骨颈骨折;  生物力学
Keywords:
strengthening of calcium phosphate bone cement;  hollow screw;  femoral neck fracture;  biomechanics
分类号:
R683.42
文献标志码:
A
摘要:
目的:研究磷酸钙骨水泥强化空心螺钉固定股骨颈骨折的生物力学特点,为股骨颈骨折的治疗提供指导。方法:选取18例新鲜尸体股骨颈骨折标本,采用随机数字表法将其分为强化组和非强化组,非强化组采用3枚空心螺钉倒三角平行排列固定,在此基础上,强化组在C臂机透视下向空心钉内灌入磷酸钙骨水泥强化,置于室温使骨水泥彻底凝固后,在相同模式下,测试两组标本的生理负荷,700 N加载下标本位移变化值及压缩承载最大负荷,同时比较扭转10°,30°及90°时的扭转刚度。结果:强化组的平均700 N加载下标本位移变化值明显低于非强化组,差异有统计学意义(t=5.72,P<0.01); 压缩承载最大负荷明显高于非强化组,差异有统计学意义(t=4.25,P<0.01); 螺钉扭转角为10°和30°时,强化组的扭转力均明显高于非强化组,差异有统计学意义(t=4.21,t=5.49; P<0.01)。结论:磷酸钙骨水泥强化能明显提高空心螺钉固定股骨颈骨折的稳定性,增强股骨颈部的抗压缩能力,并提高扭转刚度,具有重要的临床价值。
Abstract:
Objective:To study the biomechanics of cannulated screws combined with calcium phosphate cement in the treatment of femoral neck fracture and to provide guidance for the treatment.Methods:18 cases of fresh cadaveric specimens with femoral neck fracture were randomly divided into strengthening group and non strengthening group.In the non strengthening group,3 cannulated screws were placed in parallel with the inverted triangle,in addition,strengthening group was injected with calcium phosphate cement into the cannulated screws under C arm fluoroscopy.At room temperature when the cement completely solidified,the specimen displacement of two groups was tested under 700 N loading and the maximum compression load was calculated,and the torsional rigidity of 10°,30° and 90° were compared.Results:The average displacement of strengthening group under 700 N loading were significantly lower than that of the non strengthening group(t=5.72,P<0.01).The maximum compression load of strengthening group was significantly higher than that of non reinforcement group(t=4.25,P<0.01).When the twist angle of the screw was 10° and 30°,the torsional force of the strengthening group was significantly higher than that of the non strengthening group(t=4.21,t=5.49; P<0.01).Conclusion:Calcium phosphate cement can significantly improve the fixation stability of cannulated screw in femoral neck fractures,enhance the compression resistance of the femoral neck,increase the torsional stiffness and has important clinical value.

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更新日期/Last Update: 2017-06-15