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Weber B型踝关节骨折修复下胫腓前韧带的生物力学研究 |
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joint at 4.5 BW) as the physiological load，i.e.the phased load of 0，100，200，300，400 and 500N.The loading rate of the universal material tester (WD5) is 1.40 mm/min，and with the quasistatic loading mode.The load is applied on tibiofibular bone of the shank to simulate the 4 physiological movement status of the foot，i.e.neutral position，metastarsal bending position(30°)，posterior bending position(20°) and esternally rotated position.The normal foot and amputation of anterior lower tibiofibular ligament was used to test the stress change of ankle joint，displacement and axial rigidity of astragalus.Results The sample is placed in the different functional positions of the normal foot and when cutting off anterior lower tibiofibular ligament，it is significantly different in the stress change of ankle joint，displacement and axial rigidity of astragalus and in 2 status(normal foot and cutting off anterior lower tibiofibular ligament)(P＜0.05).Conclusion Upon the satisfactory fixation of the interior and exterior ankle，restoration of anterior lower tibiofibular ligament can better restore the biological flexibility of the ankle joint，maximally recover its original structure and 上一页 [1] [2] [3] [4] [5] [6] 下一页
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