title: [Finite element analysis of a new shape memory alloy cervical hook for atlantoaxial instability].
abstract: The mechanics of a new shape memory alloy cervical hook for atlantoaxial instability was analyzed with finite element method on the basis of a three-dimensional model reconstructed from the images of CT scanning of an adult cadaveric upper cervical at 1-mm interval. The stress and displacement of every nodule and element in the course of deformation of the internal fixation were tested, and the results showed that the cervical hook was strong enough against tensile stress, which concentrates in the middle of the device. The pull was 237.58 N at the loading point. With such mechanical performance, this cervical hook can be reliable for correction of atlantoaxial instability.
authors.affiliation: Department of Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China. autumn95@163.com
authors.forename: Xiao-qiu
authors.initials: XQ
authors.lastname: Shu
authors.forename: Lei
authors.initials: L
authors.lastname: Wan
authors.forename: Chun-tang
authors.initials: CT
authors.lastname: Yu
authors.forename: Tong
authors.initials: T
authors.lastname: Yin
authors.forename: An-min
authors.initials: AM
authors.lastname: Jin
mesh_terms: D000328:Adult; D000497:Alloys; D001268:Atlanto-Axial Joint; D002102:Cadaver; D020342:Finite Element Analysis; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008568:Memory; D009984:Orthopedic Fixation Devices / Q000592:standards*; D019637:Orthopedic Procedures / Q000295:instrumentation / Q000379:methods; D011859:Radiography; D015203:Reproducibility of Results; D013718:Tensile Strength
chemical_list: D000497:Alloys