中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (3): 396-400.doi: 10.3969/j.issn.2095-4344.2017.03.013

• 数字化骨科 digital orthopedics • 上一篇    下一篇

膝关节屈伸运动形态的有限元分析

张立超1,张立敏2,吕永明1,王智慧1,杨 阳1,徐 飞1,戴海峰1,李 嘉1,曹向宇1,武丽珠3   

  1. 1承德医学院附属医院骨科,河北省承德市 067000;2解放军第266医院,河北省承德市 067000;3承德市中心医院急诊科,河北省承德市 067000
  • 修回日期:2016-11-17 出版日期:2017-01-28 发布日期:2017-03-14
  • 作者简介:张立超,男,1981年生,河北省宽城县人,满族,2005年承德医学院毕业,硕士,主治医师,主要从事骨科方面的临床研究。
  • 基金资助:

    河北省2014年度医学科学研究重点课题计划项目(Zl20140191)

Finite element analysis of knee flexion and extension movement

Zhang Li-chao1, Zhang Li-min2, Lv Yong-ming1, Wang Zhi-hui1, Yang Yang1, Xu Fei1, Dai Hai-feng1, Li Jia1, Cao Xiang-yu1, Wu Li-zhu3   

  1. 1Department of Orthopedics, Affiliated Hospital, Chengde Medical College, Chengde 067000, Hebei Province, China; 2the 266 Hospital of Chinese PLA, Chengde 067000, Hebei Province, China; 3Department of Emergency, Chengde Central Hospital, Chengde 067000, Hebei Province, China
  • Revised:2016-11-17 Online:2017-01-28 Published:2017-03-14
  • About author:Zhang Li-chao, Master, Attending physician, Department of Orthopedics, Affiliated Hospital, Chengde Medical College, Chengde 067000, Hebei Province, China
  • Supported by:

    the Key Medical Science Plan Program of Hebei Province in 2014, No. Zl20140191

摘要:

文章快速阅读:

 
文题释义:
膝关节炎:是一种以退行性病理改变为基础的疾患。多见于中老年人群,其症状多表现为膝盖红肿痛、上下楼梯痛、坐起立行时膝部酸痛不适等。也会有患者表现肿胀、弹响、积液等,如不及时治疗,则会引起关节畸形。在膝关节部位还常患有膝关节滑膜炎、韧带损伤、半月板损伤、膝关节游离体、腘窝囊肿、髌骨软化、鹅足滑囊炎、膝内/外翻等关节疾病。
人工膝关节:人工膝关节置换是在近代人工髋关节成功应用于患者后逐渐发展起来的一种治疗膝关节疾病的新技术。人工膝关节完全参照了正常人膝关节的解剖形状,是一种仿生设计制品。模仿人体膝关节的结构及活动方式,人工膝关节由4个部件组成:股骨部分、胫骨部分、髌骨部分以及聚乙垫。
 
摘要
背景:三维有限元分析在骨科中被广泛应用,在膝关节屈曲运动中的研究不多。
目的:对膝关节屈曲运动的生物力学特性进行三维有限元分析。
方法:建立膝关节的三维有限元模型以及膝关节屈曲30°,60°以及120°时的三维有限元模型,分析膝关节不同屈曲位股骨前移情况、股骨内移情况、胫骨内旋情况和胫骨内翻情况。
结果与结论:①股骨前移:在膝关节屈曲30°,60°和120°时股骨均出现后移,膝关节屈曲60°时的股骨后移值大于屈曲30°和屈曲120°(P < 0.05);膝关节屈曲120°股骨后移值大于屈曲30°,但差异无显著性意义(P > 0.05);②股骨内移:在膝关节屈曲30°时股骨外移,在膝关节屈曲120°时膝关节内移,膝关节屈曲120°时股骨内移值明显大于屈曲30°和屈曲60°时(P < 0.05);膝关节屈曲30°和屈曲60°时外移值比较差异无显著性意义(P > 0.05);③胫骨内旋:在膝关节屈曲30°,60°和120°时胫骨均出现内旋,3者比较差异均无显著性意义(P > 0.05);④胫骨内翻:在膝关节屈曲30°,60°和120°时胫骨均出现内翻,其中屈曲120°时胫骨内翻不明显,膝关节屈曲60°时胫骨内翻度数最大,明显高于屈曲120°时(P < 0.05);膝关节屈曲30°时胫骨内翻度数大于屈曲120°时,但差异无显著性意义(P > 0.05);⑤结果表明,膝关节在屈曲60°时股骨后移最明显,膝关节屈曲120°时股骨内移值最大,膝关节屈曲30°和屈曲120°时胫骨内旋明显,膝关节屈曲60°时胫骨明显内翻。

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程
ORCID:
0000-0002-7079-9730(张立超)

关键词: 骨科植入物, 数字化骨科, 膝关节, 力学模型, 屈曲运动, 有限元分析, 生物学特性

Abstract:

BACKGROUND: Three dimensional finite element analysis is widely used in orthopedics, but research in the knee flexion movement is not much.

OBJECTIVE: To analyze biomechanical properties of knee flexion using finite element analysis.
METHODS: Three dimensional finite element models and models of knee flexion at 30 degrees, 60 degrees and 120 degrees were established. Femoral forward movement, femur inward movement, tibia internal rotation and tibia vara were analyzed at different flexion angles.
RESULTS AND CONCLUSION: (1) When knee flexion was at 30 degrees, 60 degrees and 120 degrees, the femur had backward movement. The backward movement value was larger at 60 degrees than at 30 and 120 degrees (P < 0.05). The backward movement value was larger at 120 degrees than at 30 degrees (P > 0.05). (2) The femur had outward movement at 30 degrees, and inward movement at 120 degrees. The inward movement value was significantly larger at 120 degrees than at 30 and 60 degrees (P < 0.05). No significant difference in outward movement was determined between the 30 and 60 degrees (P > 0.05). (3) Tibia internal rotation was not significantly different at 30, 60 and 120 degrees of flexion (P > 0.05). (4) Tibia vara was found at 30, 60 and 120 degrees of flexion, but the tibia vara was not obvious at 120 degrees. The tibia vara was maximum at 60 degrees, and significantly higher than that at 120 degrees (P < 0.05). The tibia vara was larger at 30 degrees than at 120 degrees (P > 0.05). (5) These findings verify that backward movement was most obvious at 60 degrees. Femur inward movement was most large at 120 degrees. Tibia internal rotation was noticeable at 30 and 120 degrees. Tibia vara was remarkable at 60 degrees. 


中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Knee Joint, Finite Element Analysis, Biomechanics, Tissue Engineering

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