Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (3): 329-333.doi: 10.3969/j.issn.2095-4344.2942
Nie Shaobo1, 2, Li Jiantao1, 2, Sun Jien3, Zhao Zhe4, Zhao Yanpeng1, 2, Zhang Licheng1, 2, Tang Peifu1, 2
Received:
2020-03-10
Revised:
2020-03-14
Accepted:
2020-04-15
Online:
2021-01-28
Published:
2020-11-16
Contact:
Tang Peifu, Chief physician, Professor, Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China; National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
About author:
Nie Shaobo, Doctoral candidate, Attending physician, Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China; National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
Supported by:
CLC Number:
Nie Shaobo, Li Jiantao, Sun Jien, Zhao Zhe, Zhao Yanpeng, Zhang Licheng, Tang Peifu. Mechanical stability of medial support nail in treatment of severe osteoporotic intertrochanteric fracture[J]. Chinese Journal of Tissue Engineering Research, 2021, 25(3): 329-333.
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2.2 扭转破坏实验结果 扭矩-角度示意图显示,内侧支撑髓内钉组扭转到13°之前时扭转刚度(曲线的斜率)明显高于股骨近端抗旋髓内钉组,13°之后内侧支撑髓内钉组的斜率下降,但是扭矩一直维持在一个高水平;股骨近端抗旋髓内钉组扭转到13°之前时扭转刚度维持在一个低水平,到15°左右后扭矩迅速下降,之后逐渐增加,扭矩呈波浪形,见图4。 在扭转破坏实验中,内侧支撑髓内钉组的扭转刚度为(0.154±0.024)N?m/(°),股骨近端抗旋髓内钉组为(0.065±0.018)N?m/(°),内侧支撑髓内钉的扭转刚度比股骨近端抗旋髓内钉提高了0.089 N?m/(°),为股骨近端抗旋髓内钉组的2.38倍(P < 0.05)。"
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