title: Biomechanical Analysis of Implanted Clavicle Hook Plates With Different Implant Depths and Materials in the Acromioclavicular Joint: A Finite Element Analysis Study.
abstract: Clinical implantation of clavicle hook plates is often used as a treatment for acromioclavicular joint dislocation. However, it is not uncommon to find patients that have developed acromion osteolysis or had peri-implant fracture after hook plate fixation. With the aim of preventing complications or fixation failure caused by implantation of inappropriate clavicle hook plates, the present study investigated the biomechanics of clavicle hook plates made of different materials and with different hook depths in treating acromioclavicular joint dislocation, using finite element analysis (FEA). This study established four parts using computer models: the clavicle, acromion, clavicle hook plate, and screws, and these established models were used for FEA. Moreover, implantations of clavicle hook plates made of different materials (stainless steel and titanium alloy) and with different depths (12, 15, and 18 mm) in patients with acromioclavicular joint dislocation were simulated in the biomechanical analysis. The results indicate that deeper implantation of the clavicle hook plate reduces stress on the clavicle, and also reduces the force applied to the acromion by the clavicle hook plate. Even though a clavicle hook plate made of titanium alloy (a material with a lower Young's modulus) reduces the force applied to the acromion by the clavicle hook plate, slightly higher stress on the clavicle may occur. The results obtained in this study provide a better reference for orthopedic surgeons in choosing different clavicle hook plates for surgery.
authors.affiliation: Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan.|Department of Biotechnology, Hung Kuang University, Taichung, Taiwan.
authors.forename: Cheng-Hung
authors.initials: CH
authors.lastname: Lee
authors.affiliation: Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan.|Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan.|Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan.
authors.forename: Cheng-Min
authors.initials: CM
authors.lastname: Shih
authors.affiliation: Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan.|School of Medicine, National Yang-Ming University, Taipei, Taiwan.
authors.forename: Kui-Chou
authors.initials: KC
authors.lastname: Huang
authors.affiliation: Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan.|Department of Biomedical Engineering, Hungkuang University, Taichung, Taiwan.|Department of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan.
authors.forename: Kun-Hui
authors.initials: KH
authors.lastname: Chen
authors.affiliation: Department of Orthopedics, Taichung Veterans General Hospital, Taichung, Taiwan.|Department of Orthopaedics, Chiayi Branch, Taichung Veterans General Hospital, Chiayi, Taiwan.
authors.forename: Li-Kun
authors.initials: LK
authors.lastname: Hung
authors.affiliation: Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan.|Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan.|Department of Biomedical Engineering, Hungkuang University, Taichung, Taiwan.
authors.forename: Kuo-Chih
authors.initials: KC
authors.lastname: Su
mesh_terms: D000173:Acromioclavicular Joint / Q000601:surgery*; D000497:Alloys; D001696:Biomechanical Phenomena; D001860:Bone Plates; D002968:Clavicle / Q000601:surgery*; D003198:Computer Simulation; D020342:Finite Element Analysis; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D006801:Humans; D004204:Joint Dislocations / Q000601:surgery*; D010014:Osteolysis / Q000517:prevention & control; D057068:Periprosthetic Fractures / Q000517:prevention & control; D011183:Postoperative Complications / Q000517:prevention & control; D013193:Stainless Steel; D014025:Titanium; D016896:Treatment Outcome
chemical_list: D000497:Alloys; D013193:Stainless Steel; D014025:Titanium
keywords: Acromioclavicular joint; Biomechanics; Clavicle hook plate; Finite element analysis