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[1]劉峻,鞠昌軍,林海朋,等.紋牙弧軌釘板系統(tǒng)治療腰椎單節(jié)段失穩(wěn)性疾病的 生物力學(xué)測(cè)試[J].中醫(yī)正骨,2012,24(07):8-12.
　LIU Jun*,JU Chang-jun,LIN Hai-peng,et al.Biomechanical test on the curative effect of thread-tooth arc-track screw-plate system in the treatment of lumbar monosegment instability diseases[J].The Journal of Traditional Chinese Orthopedics and Traumatology,2012,24(07):8-12.
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紋牙弧軌釘板系統(tǒng)治療腰椎單節(jié)段失穩(wěn)性疾病的 生物力學(xué)測(cè)試()
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《中醫(yī)正骨》[ISSN:1001-6015/CN:41-1162/R]

卷:
第24卷
期數(shù):
2012年07期
頁(yè)碼:
8-12
欄目:
基礎(chǔ)研究
出版日期:
2012-07-30

文章信息/Info

Title:
Biomechanical test on the curative effect of thread-tooth arc-track screw-plate system in the treatment of lumbar monosegment instability diseases
作者:
劉峻; 鞠昌軍; 林海朋; 孫金星; 譚遠(yuǎn)超
山東省文登整骨醫(yī)院,山東 文登 264400
Author(s):
LIU Jun*; JU Chang-jun; LIN Hai-peng; SUN Jin-xing; TAN Yuan- chao.*
Orthopaedics Hospital of Wendeng City,Wendeng 264400,Shandong,China
關(guān)鍵詞:
腰椎 失穩(wěn) 內(nèi)固定器 生物力學(xué)
Keywords:
Lumbar vertebrae;  Instability;  Internal fixators;  Biomechanics
摘要:
目的:評(píng)價(jià)紋牙弧軌釘板系統(tǒng)治療腰椎單節(jié)段失穩(wěn)性疾病的生物力學(xué)性能。方法:取4具新鮮豬L2～ S1節(jié)段脊柱標(biāo)本,分別將4具標(biāo)本標(biāo)記為1號(hào)、2號(hào)、3號(hào)、4號(hào),并制成L3～4椎間失穩(wěn)模型。分別用自行 研制的紋牙弧軌釘板系統(tǒng)模擬手術(shù),行單節(jié)段經(jīng)椎弓根固定,并進(jìn)行軸向和彎曲扭轉(zhuǎn)加載測(cè)試,觀察紋牙弧軌釘板系統(tǒng)的應(yīng)力、應(yīng) 變關(guān)系特點(diǎn)。結(jié)果:①在壓縮實(shí)驗(yàn)中,最大載荷達(dá)到600 N時(shí),壓縮引起的正應(yīng)力、剪應(yīng)力均較小; 載荷達(dá)600 N時(shí),中心加載最大 位移量為1.05 mm,偏心加載最大位移量為2.07 mm; 在 0～600 N 軸向加載范圍內(nèi),紋牙弧軌釘板系統(tǒng)應(yīng)力與應(yīng)變呈線性關(guān)系。 ②在彎曲扭轉(zhuǎn)實(shí)驗(yàn)中,標(biāo)本的應(yīng)力與應(yīng)變呈線性關(guān)系; 當(dāng)扭轉(zhuǎn)角達(dá)到3°時(shí),平均扭矩為18.06 N·m。結(jié)論:紋牙弧軌釘板系統(tǒng)具 有較強(qiáng)的抗軸向和彎曲扭轉(zhuǎn)載荷能力,能為腰椎失穩(wěn)節(jié)段提供即刻的穩(wěn)定性。
Abstract:
Objective:To evaluate the biomechanical property of thread-tooth arc-track screw-plate system in the treatment of lumbar monosegment instability diseases.Methods:Four fresh spine specimens of L2～ S1 segments of pig were fetched and marked with No.1,No.2,No.3 and No.4 respectively,then L3～ 4 intervertebral instability models were built from them.They were administrated with simulating operation of transpedicular fixation in the single segment through self-designed thread-tooth arc-track screw- plate system,then they were processed with axial loading test and torsion test,and the stress-strain relation of the thread-tooth arc-track screw-plate system was observed.Results:①In the compressive test,the normal stress and shear stress caused by the compression were all low when the maximum load came to 600 N; when the load reached to 600 N,the maximum displacement of central loading was 1.05 mm and the maximum displacement of eccentric loading was 2.07 mm; when axial loading changed within the range of 0～600 N,there was a linear relationship between stress and strain for the thread-tooth arc-track screw-plate system.②In the bending torsion test,there was a linear relationship between stress and strain for the specimen; when torsion angle came to 3°,the average torque was 18.06 N·m.Conclusion:Thread-tooth arc-track screw-plate system can provide immediate stability for lumbar instability segments for its higher capacity to resist axial and torsion load.

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備注/Memo

備注/Memo:
2011-11-23收稿 2012-03-23修回
基金項(xiàng)目:威海市科技發(fā)展計(jì)劃項(xiàng)目(2009-3-89-1)
更新日期/Last Update: 2012-07-30