Cheng-Min Shih1,2, Kui-Chou Huang1, Chien-Chou Pan1, Cheng-Hung Lee3,4, Kuo-Chih Su5. 1. Department of Orthopaedics, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect. 4, Taichung City, Taiwan. 2. Department of Biological Science and Technology, National Chiao Tung University, Hsinchu City, Taiwan. 3. Department of Orthopaedics, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect. 4, Taichung City, Taiwan. 298f@vghtc.gov.tw. 4. Department of Biotechnology, Hung Kuang University, Taichung City, Taiwan. 298f@vghtc.gov.tw. 5. Department of Medical Research, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect. 4, Taichung City, Taiwan. kcsu@vghtc.gov.tw.
Abstract
PURPOSE: Clavicle hook plates are frequently used in clinical orthopaedics to treat acromioclavicular joint dislocation. However, patients often exhibit acromion osteolysis and per-implant fracture after undergoing hook plate fixation. With the intent of avoiding future complications or fixation failure after clavicle hook plate fixation, we used finite element analysis (FEA) to investigate the biomechanics of clavicle hook plates of different materials and sizes when used in treating acromioclavicular joint dislocation. METHODS: Using finite element analysis, this study constructed a model comprising four parts: clavicle, acromion, clavicle hook plate and screws, and used the model to simulate implanting different types of clavicle hook plates in patients with acromioclavicular joint dislocation. Then, the biomechanics of stainless steel and titanium alloy clavicle hook plates containing either six or eight screw holes were investigated. RESULTS: The results indicated that using a longer clavicle hook plate decreased the stress value in the clavicle, and mitigated the force that clavicle hook plates exert on the acromion. Using a clavicle hook plate material characterized by a smaller Young's modulus caused a slight increase in the stress on the clavicle. However, the external force the material imposed on the acromion was less than the force exerted on the clavicle. CONCLUSIONS: The findings of this study can serve as a reference to help orthopaedic surgeons select clavicle hook plates.
PURPOSE: Clavicle hook plates are frequently used in clinical orthopaedics to treat acromioclavicular joint dislocation. However, patients often exhibit acromion osteolysis and per-implant fracture after undergoing hook plate fixation. With the intent of avoiding future complications or fixation failure after clavicle hook plate fixation, we used finite element analysis (FEA) to investigate the biomechanics of clavicle hook plates of different materials and sizes when used in treating acromioclavicular joint dislocation. METHODS: Using finite element analysis, this study constructed a model comprising four parts: clavicle, acromion, clavicle hook plate and screws, and used the model to simulate implanting different types of clavicle hook plates in patients with acromioclavicular joint dislocation. Then, the biomechanics of stainless steel and titanium alloy clavicle hook plates containing either six or eight screw holes were investigated. RESULTS: The results indicated that using a longer clavicle hook plate decreased the stress value in the clavicle, and mitigated the force that clavicle hook plates exert on the acromion. Using a clavicle hook plate material characterized by a smaller Young's modulus caused a slight increase in the stress on the clavicle. However, the external force the material imposed on the acromion was less than the force exerted on the clavicle. CONCLUSIONS: The findings of this study can serve as a reference to help orthopaedic surgeons select clavicle hook plates.
Authors: Kailun Wu; Xinlin Su; Stephen J L Roche; Michael F G Held; Huilin Yang; Robert N Dunn; Jiong Jiong Guo Journal: J Orthop Surg Res Date: 2020-06-11 Impact factor: 2.359
Authors: Lei Zhang; Xin Zhou; Ji Qi; Yan Zeng; Shaoqun Zhang; Gang Liu; Ruiyue Ping; Yikai Li; Shijie Fu Journal: Exp Ther Med Date: 2017-11-10 Impact factor: 2.447