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[1]劉超,仇成華,徐達(dá)強(qiáng).兩段式拉力螺釘?shù)幕z率和加壓力研究[J].中醫(yī)正骨,2025,37(02):28-33.
　LIU Chao,QIU Chenghua,XU Daqiang.The thread stripping rate and pressurization force of a two-segmental lag screw:a biomechanical study[J].The Journal of Traditional Chinese Orthopedics and Traumatology,2025,37(02):28-33.
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兩段式拉力螺釘?shù)幕z率和加壓力研究()
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《中醫(yī)正骨》[ISSN:1001-6015/CN:41-1162/R]

卷:
第37卷
期數(shù):
2025年02期
頁(yè)碼:
28-33
欄目:
基礎(chǔ)研究
出版日期:
2025-02-20

文章信息/Info

Title:
The thread stripping rate and pressurization force of a two-segmental lag screw:a biomechanical study
作者:
劉超1; 仇成華2; 徐達(dá)強(qiáng)2
(1.河南省洛陽(yáng)正骨醫(yī)院/河南省骨科醫(yī)院,河南 洛陽(yáng) 471002; 2.鹽城市第三人民醫(yī)院,江蘇 鹽城 224008)
Author(s):
LIU Chao1; QIU Chenghua2; XU Daqiang2
1.Luoyang Orthopedic-Traumatological Hospital,Luoyang 471002,Henan,China 2.Yancheng Third People's Hospital,Yancheng 224008,Jiangsu,China
關(guān)鍵詞:
骨螺絲;  骨質(zhì)疏松性骨折;  松質(zhì)骨;  滑絲;  加壓力
Keywords:
bone screws;  osteoporotic fractures;  cancellous bone;  screw damage;  intensity of stress
摘要:
目的:觀察兩段式拉力螺釘?shù)幕z率和加壓力。方法:招募10位骨科醫(yī)生和1位獨(dú)立研究員,在密度為0.08 g·cm-3、0.16 g·cm-3、0.32 g·cm-3的合成松質(zhì)骨塊上進(jìn)行實(shí)驗(yàn)。在相同密度的合成松質(zhì)骨塊上,每位醫(yī)生分別使用兩段式拉力螺釘和AO拉力螺釘各擰緊10次。10位醫(yī)生在3種密度的合成松質(zhì)骨塊上共操作600次。在醫(yī)生操作完成后,研究員繼續(xù)擰緊螺釘,直至加壓力明顯下降,以確保每次測(cè)試所得的加壓力曲線均包含上升期、峰值和下降期3個(gè)階段。測(cè)量并比較醫(yī)生與研究員擰緊螺釘時(shí)的加壓力,判斷螺釘是否滑絲。同時(shí),記錄醫(yī)生停止擰緊螺釘時(shí)的加壓力,以比較兩段式拉力螺釘與AO拉力螺釘?shù)募訅毫Α＝Y(jié)果:兩段式拉力螺釘?shù)幕z率低于AO拉力螺釘(5.33%,75.67%,χ2=307.923,P=0.000)。不同醫(yī)生之間,兩段式拉力螺釘和AO拉力螺釘?shù)幕z率均存在差異(χ2=109.366,P=0.000; χ2=17.430,P=0.042)。在密度為0.08 g·cm-3、0.16 g·cm-3、0.32 g·cm-3的合成松質(zhì)骨塊上,兩段式拉力螺釘?shù)幕z率均低于AO拉力螺釘(χ2=126.750,P=0.000; χ2=101.282,P=0.000; χ2=82.353,P=0.000)。不同密度合成松質(zhì)骨塊之間,兩段式拉力螺釘?shù)幕z率存在差異(χ2=6.470,P=0.039),AO拉力螺釘滑絲率的差異無(wú)統(tǒng)計(jì)學(xué)意義(χ2=1.340,P=0.512)。兩段式拉力螺釘?shù)恼w加壓力高于AO拉力螺釘(t=-5.800,P=0.000)。兩段式拉力螺釘和AO拉力螺釘?shù)募訅毫S合成松質(zhì)骨塊密度的增加而增加(F=2812.63,P=0.000; F=755.193,P=0.000)。結(jié)論:相同規(guī)格的兩段式拉力螺釘?shù)募訅毫Ω哂贏O拉力螺釘,且滑絲率低于AO拉力螺釘。
Abstract:
Objective:To observe the thread stripping rate and pressurization force of a two-segmental lag screw(TSLS).Methods:Ten orthopedic surgeons and an independent investigator were recruited to conduct the experiments on synthetic cancellous bone blocks with densities of 0.08,0.16,and 0.32 g/cm(3),respectively.On the synthetic cancellous bone block with the same density,the TSLS and AO lag screw(AOLS)were tightened 10 times,respectively,by each surgeon.In total,the 10 surgeons operated on the synthetic cancellous bone blocks with three different densities for 600 times.After each surgeon finished the operation,the independent investigator advanced the screw until a remarkable decrease of pressurization force was observed,thereby ensuring the pressurization force curve obtained from each test included the ascending phase,the peak value phase,and the descending phase.The pressurization force applied by each surgeon and the investigator when tightened the screw were measured and compared to determine whether the thread was stripped.Meanwhile,the pressurization forces when the surgeons stopped tightening the screw were recorded to analyze the difference of the pressurization force between TSLS and AOLS.Results:The thread stripping rate of TSLS was lower than that of AOLS(5.33%,75.67%,χ2=307.923,P=0.000).There was difference in the thread stripping rate of TSLS and AOLS among different surgeons(χ2=109.366,P=0.000; χ2=17.430,P=0.042).The thread stripping rate of TSLS was lower than that of AOLS on the synthetic cancellous bone blocks with densities of 0.08,0.16,and 0.32 g/cm(3),respectively(χ2=126.750,P=0.000; χ2=101.282,P=0.000; χ2=82.353,P=0.000).Further comparison revealed that there was difference in the thread stripping rate of TSLS,while,no statistical difference in the thread stripping rate of AOLS among the synthetic cancellous bone blocks with different densities(χ2=6.470,P=0.039; χ2=1.340,P=0.512).The overall pressurization force of TSLS was higher than that of AOLS(t=-5.800,P=0.000).The pressurization force of both TSLS and AOLS increased with the increase in the density of the synthetic cancellous bone blocks(F=2812.63,P=0.000; F=755.193,P=0.000).Conclusion:TSLS has a higher pressurization force and a lower thread stripping rate compared to AOLS with the same specification.

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中醫(yī)正骨2025年2月第37卷第2期 J Trad Chin Orthop Trauma,2025,Vol.37,No.2(總113)
(總114)中醫(yī)正骨2025年2月第37卷第2期 J Trad Chin Orthop Trauma,2025,Vol.37,No.2
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基金項(xiàng)目:國(guó)家骨科與運(yùn)動(dòng)康復(fù)臨床醫(yī)學(xué)研究中心創(chuàng)新基金資助項(xiàng)目(2021-NCRC-CXJJ-ZH-19)
更新日期/Last Update: 1900-01-01