title: Construction and biomechanical properties of polyaxial self-locking anatomical plate based on the geometry of distal tibia.
abstract: 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.
authors.affiliation: Guangzhou Institute of Traumatic Surgery, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou 510220, China.
authors.forename: Weiguo
authors.initials: W
authors.lastname: Liang
authors.affiliation: Guangzhou Institute of Traumatic Surgery, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou 510220, China.
authors.forename: Weixiong
authors.initials: W
authors.lastname: Ye
authors.affiliation: Guangzhou Institute of Traumatic Surgery, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou 510220, China ; School of Pathology and Laboratory Medicine, The University of Western Australia, Crawley, WA 6009, Australia.
authors.forename: Dongping
authors.initials: D
authors.lastname: Ye
authors.affiliation: Guangzhou Institute of Traumatic Surgery, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou 510220, China.
authors.forename: Ziqiang
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: Guangzhou Institute of Traumatic Surgery, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou 510220, China.
authors.forename: Zhiguang
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Guangzhou Institute of Traumatic Surgery, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou 510220, China.
authors.forename: Aiguo
authors.initials: A
authors.lastname: Li
authors.affiliation: School of Mechanical Engineering, University of Adelaide, SA 5005, Australia.
authors.forename: Zong-Han
authors.initials: ZH
authors.lastname: Xie
authors.affiliation: Department of Infrastructure Engineering, The University of Melbourne, VIC 3010, Australia.
authors.forename: Lihai
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Guangzhou Institute of Traumatic Surgery, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou 510220, China ; School of Pathology and Laboratory Medicine, The University of Western Australia, Crawley, WA 6009, Australia.
authors.forename: Jiake
authors.initials: J
authors.lastname: Xu
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D005260:Female; D050723:Fractures, Bone / Q000503:physiopathology / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D019736:Prostheses and Implants; D013977:Tibia / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000648:ultrastructure*; D014057:Tomography, X-Ray Computed