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  本文選題：股骨骨折　切入點：骨釘　出處：《中國組織工程研究》2016年17期 　論文類型：期刊論文

【摘要】：背景:臨床對股骨干骨折進行修復的過程中,可以選擇不同內固定方式,包括橋接組合式內固定系統(tǒng)與金屬鎖定接骨板釘系統(tǒng)。目的:比較橋接組合式內固定系統(tǒng)與金屬鎖定接骨板釘系統(tǒng)固定股骨干骨折的生物力學特性。方法:收集18個股骨標本,隨機分為3組,每組6個,其中正常對照組不作任何處理,其余兩組制備股骨干骨折模型,橋接組合組行橋接組合式內固定,接骨板釘系統(tǒng)組行金屬鎖定接骨板釘系統(tǒng)內固定。對3組標本進行生物力學測試,通過股骨壓縮實驗記錄3組最大載荷500 N作用下的最大位移;通過股骨前屈實驗記錄3組最大載荷100 N作用下的最大位移;通過股骨后屈實驗記錄3組最大載荷100 N作用下的最大位移。結果與結論:1不同載荷下壓縮實驗:橋接組合組和接骨板釘系統(tǒng)組的最大位移均大于正常對照組,其中在最大載荷500 N下,橋接組合組和接骨板釘系統(tǒng)組的最大位移均顯著大于正常對照組(P0.05);且橋接組合組顯著小于接骨板釘系統(tǒng)組(P0.05);2不同載荷下前屈實驗:橋接組合組和接骨板釘系統(tǒng)組的最大位移均大于正常對照組,其中在最大載荷100 N下,橋接組合組和接骨板釘系統(tǒng)組的最大位移均顯著大于正常對照組(P0.05);且橋接組合組顯著小于接骨板釘系統(tǒng)組(P0.05);3不同載荷下后屈實驗:橋接組合組和接骨板釘系統(tǒng)組的最大位移均大于正常對照組,其中在最大載荷100 N下,橋接組合組和接骨板釘系統(tǒng)組的最大位移均顯著大于正常對照組(P0.05);且橋接組合組顯著小于接骨板釘系統(tǒng)組(P0.05);4結果表明,體外模擬股骨干骨折橋接組合式內固定系統(tǒng)與金屬鎖定接骨板釘系統(tǒng)均能獲得一定的固定效果,設計符合生物力學原理,其中橋接組合式內固定在壓應力以及前屈、后屈應力作用下,均可以保持較小的位移,提示具有較好的變形抵抗能力。
[Abstract]:Background: in the process of repairing femoral shaft fracture, different internal fixation methods can be selected. Including bridged composite internal fixation system and metal locking plate nail system. Objective: to compare the biomechanical characteristics of bridging combined internal fixation system and metal locking plate nail system for femoral shaft fracture. Methods: 18 femoral specimens were collected. The rats were randomly divided into 3 groups, 6 in each group, in which the normal control group was not treated with any treatment, the other two groups were used to establish femoral shaft fracture model, and the bridged combined internal fixation was performed in the bridging combination group. The internal fixation of metal locking plate nail system was performed in the group of plate nail system. Biomechanical tests were carried out on the three groups of specimens. The maximum displacement of the three groups under the action of 500 N under the maximum load was recorded by femoral compression experiment. The maximal displacement of 3 groups under 100 N maximum load was recorded by femur forward flexion experiment. Results and conclusion the maximum displacement of the bridging group and the plate nail system group was higher than that of the normal control group under different loads, and the maximum displacement of the three groups was recorded by the femur flexion test under the maximum load of 100 N. results and conclusions: the maximum displacement of the bridging group and the plate nail system group was higher than that of the normal control group. Under the maximum load of 500N, The maximum displacement of the bridging group and the plate nail system group were significantly higher than that of the normal control group (P 0.05), and the bridging combination group was significantly smaller than that of the plate nail system group (P 0.05) under different loads: the bridging combination group and the plate nail system group were significantly less than those of the bridge group and the plate nail system group under different loads. The maximum displacement was higher than that in the normal control group. Where the maximum load is 100 N, The maximum displacement of the bridging group and the plate nail system group were significantly higher than that of the normal control group (P 0.05), and the bridge combination group was significantly smaller than the plate nail system group (P 0.05) under different loads: the bridge combination group and the plate nail system group were significantly less than those of the bridge group and the plate nail system group under different loads. The maximum displacement was higher than that in the normal control group. Under the maximum load of 100N, the maximum displacement of the bridging group and the plate nail system group was significantly higher than that of the normal control group (P 0.05), and the bridge group was significantly smaller than the plate nail system group (P 0.05), the results showed that the maximum displacement of the bridging group was significantly higher than that of the normal control group (P 0.05). In vitro, the combined internal fixation system and the metal locking plate fixation system for femoral shaft fracture can obtain certain fixation effect. The design accords with the biomechanical principle, in which the bridge combined internal fixation system is under compressive stress and forward flexion. Under the action of post-flexion stress, the displacement can be kept small, which indicates that the deformation resistance is better.
【作者單位】： 鄭州市骨科醫(yī)院下肢骨科Ⅰ;
【分類號】：R687.3

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