Three-dimensional finite element analysis of calcaneus fracture treated with plate fixation

doi:10.3969/j.issn.2095-4344.2013.17.008

Abstract

Abstract:

BACKGROUND: There are many types of plate can be used for the treatment of calcaneus fracture, but it is not clear which type has the best effect.
OBJECTIVE: To observe and compare the biomechanical properties, such as stress, strain and displacement of three types of plate through loading them on the three-dimensional finite element model of calcaneus fracture.
METHODS: The three-dimensional finite element model of calcaneus fracture was established when the ankle joint was in neutral position and back stretches 20° position, then the type Ⅰ, type Ⅱ and type Ⅲ plates were used to fix the fracture model. Through loading force on the model, the stress distribution of plates and calcaneus, and displacement between fracture gaps were calculated.
RESULTS AND CONCLUSION: In the position of the neutral and back stretches 20°, the stress distribution of type Ⅰ, type Ⅱ and type Ⅲ plates was not uniform, and the stress at the front was higher than that at back. Comparatively, the stress distribution of type Ⅰ plate was more uniform than type Ⅱ plate and type Ⅲ plate. And the stress distribution of calcaneus at the front was higher than that at back, while the largest stress of the normal calcaneus was distributed on the tubercle. The maximum stress of calcaneus after fixed with type Ⅰ plate was lower than that fixed with type Ⅱ and type Ⅲ plates. Displacement among fracture gaps occurred after fixed with three types of plates in two positions, and the displacement tendency was uniform. The results show that when compared with type Ⅱ and type Ⅲ plates, the stress of calcaneus after fixed with type Ⅰ plate is smaller and more uniform which corresponds with the biomechanics principle.

Key words: bone and joint implants, digital orthopedics, orthopedic three-dimensional finite element, calcaneus fracture, plate internal fixation, three-dimensional finite element, biomechanics, other grants-supported paper

CLC Number:

R318

Huang Zhu-hou, Li Jun, Du Jing-wen, Chen Ri-qi, Zhang Jian-xin. Three-dimensional finite element analysis of calcaneus fracture treated with plate fixation[J]. Chinese Journal of Tissue Engineering Research, 2013, 17(17): 3094-3100.

Figures/Tables 3

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