基于有限元分析的胫骨中段骨折接骨板固定方式研究  

Study on the Fixation Effect of Plate in the Middle Tibial Fracture Based on Finite Element Analysis

作　　者：姚天平 石彬 周凯华 YAO Tianping;SHI Bin;ZHOU Kaihua(Shanghai Institute of Medical Device Testing,Shanghai,201318;ShangLi International Standards Co.Ltd.,Shanghai,201707;Zhongshan Hospital(Qingpu Branch),Fudan University,Shanghai,201700)

机构地区：[1]上海市医疗器械检验研究院,上海市201318 [2]上理检测技术(上海)有限公司,上海市201707 [3]复旦大学附属中山医院青浦分院,上海市201700

出　　处：《中国医疗器械杂志》2022年第3期259-264,共6页Chinese Journal of Medical Instrumentation

摘　　要：该研究建立了胫骨中段粉碎性骨折接骨板固定的有限元模型,探讨生物力学问题。分别采用不同材料(不锈钢、钛合金、碳纤维增强聚醚醚酮接骨板(CF50))的8孔和10孔接骨板进行胫骨内侧或外侧的固定。比较在200 N、700 N轴向压缩载荷下骨折端的最大位移、应力,接骨板受到的最大应力,接骨板下方骨皮质的应力遮挡情况。基于临床考虑,CF50比起金属材料是更为理想的接骨板材料,并能安全使用。在治疗胫骨中段粉碎性骨折时,胫骨外侧置板和使用工作长度相对较长的接骨板在骨折端微动,应力以及皮质的应力遮挡率方面是有优势的。In this study, tibial shaft fracture has been treated with implants as numerically to investigate the stress behavior and the effect of plate material, position and length under pressure load. Plates of stainless steel, titanium alloy(Ti6Al4V), or CF-PEEK(CF50) were used to fix the tibial shaft comminuted fracture in different location and different working length. The maximum stress, the maximum micromotion of fracture and the stress shielding of cortex bone were analyzed. CF50 is more ideal biomechanical fixation material than traditional metal material for the treatment of tibial shaft comminuted fractures. In the treatment of tibial shaft comminuted fracture, lateral position and with relatively long working length of the plate have the advantages in micromotion, stress and stress shielding rate of the fracture end.

关 键 词：胫骨中段骨折 有限元 生物力学 

分 类 号：TH781[机械工程—仪器科学与技术] R683[机械工程—精密仪器及机械]