Construction and Biomechanical Properties of PolyAxial Self-Locking Anatomical Plate Based on the Geometry of Distal Tibia

In order to provide scientific and empirical evidence for the clinical application of the polyaxial self-locking anatomical plate, 80 human tibias from healthy adults were scanned by spiral CT and their three-dimensional images were reconstructed using the surface shaded display (SSD) method. Firstl...

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Bibliographic Details
Published in:BioMed research international 2014-01, Vol.2014 (2014), p.1-7
Main Authors: Liang, Weiguo, Ye, Weixiong, Ye, Dongping, Zhou, Ziqiang, Chen, Zhiguang, Li, Aiguo, Xie, Zong-Han, Zhang, Lihai, Xu, Jiake
Format: Article
Language:English
Subjects:
Adult
Biomechanical Phenomena
Biomedical research
Care and treatment
Female
Fractures
Fractures, Bone - physiopathology
Fractures, Bone - therapy
Health aspects
Humans
Injuries
Internal fixation in fractures
Male
Middle Aged
Physiological aspects
Prostheses and Implants
Risk factors
Tibia
Tibia - diagnostic imaging
Tibia - physiopathology
Tibia - ultrastructure
Tomography, X-Ray Computed
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Summary:In order to provide scientific and empirical evidence for the clinical application of the polyaxial self-locking anatomical plate, 80 human tibias from healthy adults were scanned by spiral CT and their three-dimensional images were reconstructed using the surface shaded display (SSD) method. Firstly, based on the geometric data of distal tibia, a polyaxial self-locking anatomical plate for distal tibia was designed and constructed. Biomechanical tests were then performed by applying axial loading, 4-point bending, and axial torsion loading on the fracture fixation models of fresh cadaver tibias. Our results showed that variation in twisting angles of lateral tibia surface was found in various segments of the distal tibia. The polyaxial self-locking anatomical plate was constructed based on the geometry of the distal tibia. Compared to the conventional anatomical locking plate, the polyaxial self-locking anatomical plate of the distal tibia provides a better fit to the geometry of the distal tibia of the domestic population, and the insertion angle of locking screws can be regulated up to 30°. Collectively, this study assesses the geometry of the distal tibia and provides variable locking screw trajectory to improve screw-plate stability through the design of a polyaxial self-locking anatomical plate.
ISSN:2314-6133
2314-6141
DOI:10.1155/2014/436325