Abstract—The aim of the present study was to evaluate the intertrochanteric fracture fixation by a Dynamic Hip Screw (DHS) with the various plate length. The analysis domains consist of the intact femur with two millimeters of the fracture gap stabilized by 2-hole, 4-hole, 6-hole and 8-hole of DHS. All simulations were performed under one-legged stance walking activity condition. In this study, the stress distribution, elastic strain, and strain energy density were the main parameters used to evaluate the risk of implant failure, the stability of fracture site including the energy absorption or load sharing, respectively. According to the results, there are no significant differences in the increasing plate length to the level of stress distribution as well as the stability of fracture. In early state, the patient should be avoided the full bearing weight for the risk of implant failure. In addition, the removal implant should operate after complete healing bone.
Index Terms—Dynamic hip screw, plate length, stability of fracture, intertrochanteric fracture
The authors are with the School of Mechanical Engineering, Institute of Engineering, Suranaree University of Technology, Nakon Ratchasima, Thailand. (Corresponding author to provide phone: +66-44-224553; fax: +66-44-224613; e-mail: supakit@sut.ac.th; kasem_siamnuai@hotmail.com)
Cite: Supakit Rooppakhun and Kasem Siamnuai, "Finite Element Analysis of Dynamic Hip Screw for Intertrochanteric Fracture," International Journal of Modeling and Optimization vol. 2, no. 2, pp. 158-161, 2012.
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