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[1]唐洪濤,仝允輝,張美超,等.股骨頸骨折愈合后釘?shù)乐补菓?yīng)力分布的有限元分析[J].中醫(yī)正骨,2011,23(01):22-24.
　TANG Hong-tao*,TONG Yun-hui,ZHANG Mei-chao,et al.Finite element analysis of the stress distribution in femoral head and neck of bone grafting in nail path after femoral neck fracture healing[J].The Journal of Traditional Chinese Orthopedics and Traumatology,2011,23(01):22-24.
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股骨頸骨折愈合后釘?shù)乐补菓?yīng)力分布的有限元分析()
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《中醫(yī)正骨》[ISSN:1001-6015/CN:41-1162/R]

卷:
第23卷
期數(shù):
2011年01期
頁碼:
22-24
欄目:
基礎(chǔ)研究
出版日期:
2011-01-30

文章信息/Info

Title:
Finite element analysis of the stress distribution in femoral head and neck of bone grafting in nail path after femoral neck fracture healing
作者:
唐洪濤1; 仝允輝1; 張美超2; 趙衛(wèi)東2
1.河南省洛陽正骨醫(yī)院,河南 洛陽 471002;
2.南方醫(yī)科大學(xué),廣東 廣州 510515
Author(s):
TANG Hong-tao*; TONG Yun-hui; ZHANG Mei-chao; et al.*
Luoyang Orthopaedic Hospital,Luoyang 471002,Henan,China
關(guān)鍵詞:
股骨頸骨折 股骨頭壞死 生物力學(xué) 有限元分析
Keywords:
Femoral neck fractures;  Femur head necrosis;  Biomechanics;  Finite element analysis
摘要:
目的:探討股骨頸骨折經(jīng)空心加壓螺釘固定,骨折愈合后取出螺釘遺留的釘?shù)纼?nèi)是否應(yīng)予植骨,為臨床選擇治療方法提供依 據(jù)。方法:重建人體股骨頭頸部的三維有限元仿真模型,模擬釘?shù)啦恢补桥c釘?shù)乐补堑墓晒穷^頸部,對模型進(jìn)行虛擬加載和仿真計(jì) 算。比較2種模型在同一載荷下的應(yīng)力分布及位移情況。結(jié)果:不植骨模型的最大應(yīng)力集中在股骨頭負(fù)重區(qū),植骨模型的最大應(yīng)力 集中在股骨頸下方的內(nèi)后側(cè)處即股骨矩區(qū),且不植骨模型股骨頭負(fù)重區(qū)應(yīng)力最大值(0.482 E+8)遠(yuǎn)遠(yuǎn)大于植骨模型應(yīng)力最大值 (0.295 E+8); 釘?shù)牢恢玫奈灰茰y試顯示,2組模型股骨頭區(qū)位移最大,不植骨模型的股骨頭區(qū)位移值(0.391 E-0.3)明顯大于植骨 模型的股骨頭區(qū)位移值(0.352 E-0.3)。結(jié)論:股骨頸骨折采用空心加壓螺釘內(nèi)固定,骨折愈合取出螺釘后釘?shù)纼?nèi)植骨有利于提高 股骨頭頸部的生物力學(xué)性能,預(yù)防因股骨頭部應(yīng)力過于集中導(dǎo)致的股骨頭壞死塌陷。
Abstract:
Objective:To investigate the rationality of bone grafting in nail path after femoral neck fracture healing and internal fixator was removed so as to provide theoretical support for clinical therapy.Methods:Two three-dimensional finite element models of the femoral head and neck region were reconstructed after femoral neck fracture healing and internal fixator was removed,one undergone bone grafting.Both of the models were simulated under the load of body weight,and the stress and shift on the femoral head and neck were calculated and compared.Results:Analysis of the three-dimension finite element model showed that the massive stress concentrated on weight loading region of femoral head without bone grafting,while the massive stress concentrated on the region of calcar femorale of grafting-bone model.The max-stress value(0.482 E+8)in the weight loading region of femoral head without bone grafting was far higher than the max-stress value(0.295 E +8)of ungrafting-bone model.In the nail path shift test,value of shift in the region of femoral head of the ungrafting-bone model(0.391 E-0.3)significantly exceeded that of grafting-bone model(0.352 E- 0.3).Conclusion:For the treatment of femoral neck fracture with hollow compression screws,bone grafting in the channel of screw should be used to improve biomechanical integrity of femoral head and neck after fracture healed and hollow compression screws were taken out.This is of benefit to preventing the collapse of femoral head owing to excessive stress concentration on femoral head.

參考文獻(xiàn)/References:

[1] 危杰,周力,王滿宜.股骨頸骨折術(shù)后股骨頭缺血性壞死的發(fā)生及轉(zhuǎn)歸[J].中華骨科雜志,2005,25(1):1-6.
[2] 張美超,史風(fēng)雷,趙衛(wèi)東,等.髖關(guān)節(jié)外展不同角度股骨頸應(yīng)力分布的有限元分析[J].第一軍醫(yī)大學(xué)學(xué)報(bào),2005,25(10):1244- 1246.
[3] Sugano N,Takaoka K,Ohzono K,et al.Prognostication of nontraumatic avascular necrosis of the femoral head.Significance of location and size of the necrotic lesion[J].Clin Orthop Relat Res,1994,(303):155-164.
[4] Chung SM.The arterial supply of the developing proximal end of the human femur[J].J Bone Joint Surg Am,1996,58(7):1961-1970.
[5] 馬信龍,張華峰,馬劍雄,等.生物力學(xué)因素對大鼠激素性股骨頭壞死的作用[J].中國中西醫(yī)結(jié)合外科雜志,2010,16(1):32- 35.
[6] Brown TD,Pedersen DR,Baker KJ,et al.Mechanical consequences of core drilling and bone-grafting on osteonecrosis of the femoral head[J].J Bone Joint Surg Am,1993,75(9):1358-1367.
[7] Kim YM,Lee SH,Lee FY,et al.Morphologic and biomechanical study of avascular necrosis of the femoral head [J].Orthopedics,1991,14(10):1111-1116.

更新日期/Last Update: 2011-01-30