水平带状钢板治疗胫骨平台后外侧象限骨折的生物力学研究

doi:10.13418/j.issn.1001-165x.2018.01.017

Abstract

Abstract:

Objective　To compare and analyze the biomechanical stability of 3 different fixations for the posterolateral tibial plateau fracture.　Methods　The posterolateral shearing fracture models were created in 18 synthetic tibia(Synbone) and randomly assigned into 3 groups．The fractures were fixed by horizontal belt plate (Group A), lateral low-profile anatomical LCP (Group B) and posterior reconstructive plate(Group C). Vertical displacements of the posterolateral fragments and failure loads were measured under axial loads including static loading test (from 300 N to 1050 N), fatigue loading test and damage loading teat. Results 　The vertical displacements in groups A，B，and C were respectively (2.77±1.79)mm, (2.69±1.14)mm, and (1.62±0.60)mm under fatigue loading test, the total load 1050N with 10 mm/min and repeat load 10000 times．There was no significant difference between the groups (P>0.05). After the damage loading test, the final force in groups A，B，and C were respectively (2055±263) N, (1968±209) N and (2272±130) N, and there was significant difference among the groups (P<0.05).　Conclusion　Horizontal belt plate fixation for isolated posterolateral tibial plateau fracture can bring sufficient stability for the posterolateral fragment.

Key words: Tibial plateau;　Posterolateral plateau fracture;　Plate internal fixation;　Outcome; , Biomechanics

HU Sun-jun，ZHANG Shi-min，LI Shuang，DU Shou-chao, MA Zhuo，XIONG Wen-feng, ZHANG Ying-qi. Horizontal belt plate fixation for treating the isolated posterolateral tibial plateau fracture：a biomechanical study[J]. Chinese Journal Of Clinical Anatomy, 2018, 36(1): 77-81.

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Horizontal belt plate fixation for treating the isolated posterolateral tibial plateau fracture：a biomechanical study

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