Chinese Journal of Tissue Engineering Research ›› 2017, Vol. 21 ›› Issue (3): 396-400.doi: 10.3969/j.issn.2095-4344.2017.03.013

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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

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

CLC Number: