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17 articles for “Femur”
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Research ArticleOpen accessEvery word in the titleSTUDY OF THE INTERFRAGMENTARY STRAIN AND THE INTERFRAGMENTARY MODULUS WITH CHANGING THE DISTANCE BETWEEN PLATE AND FEMURBoonthum WongchaiFor several years the distance between plate and femur has been studied for preventing the damage to the blood supply by the contact pressure between plate and femur. The Limited Contact Dynamics Compression Plate (LC-DCP) is normally used to create the distance by using the locking screws. However, increasing of the distance between plate and femur affects the interfragmentary stain … …American Journal of Applied Sciences, Vol. 11, Issue 3 · 28 Dec 2013 · 6,846 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleUsing a Truss-Inspired Model with the Uniform Strength Optimization Theory to Predict Spongy Bone Geometry in Proximal FemurHamed Pishdast, Farzam Farahmand, Gholamreza RouhiThis paper presents a new naïve approach for simulating bone remodeling process. It is based on the uniform strength theory of optimization and employs a truss-like model for bone. The truss was subjected to external loads including 5 point loads simulating the hip joint contact forces and 3 muscular forces at the attachment sites of the muscles to the bone … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 7,174 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleBiofidel FEA Modeling of Customized Hybrid Biological Hip Joint Prostheses, Part I: Biomechanical Behavior of Implanted FemurRaffaella Aversa, Florian Ion T. Petrescu, Relly Victoria V. Petrescu, Antonio ApicellaBiofidel femur Finite Element Models have been developed using specific combination of Computer Tomography segmentation and solid modeling software tools able to represent bone physiology and structural behavior. These biofidel Finite Element Models (FEM) is used to evaluate the modification of the physiological stress distribution in a prosthesized femur and to assess new design criteria for the development of biomimetic … …American Journal of Biochemistry and Biotechnology, Vol. 12, Issue 4 · 16 Dec 2016 · 8,716 accessesView PDFCite
Review ArticleOpen accessIn the keywordsNews in Bone Modeling for Customized Hybrid Biological Prostheses DevelopmentRelly Victoria Virgil Petrescu, Raffaella Aversa, Valeria Perrotta et al.The complex biomechanics and morphologies of the femur proximal epiphysis are presented. The nature and fine morphology of the femur head and its structural behavior have been investigated. Isotropic and orthotropic trabecular structures have been associated with oriented compression and tensioned areas of the femur head FEM models. These isotropic/orthotropic trabecular morphologies and their allocations govern the stress and strain … …OnLine Journal of Biological Sciences, Vol. 21, Issue 2 · 14 Jun 2021 · 6,351 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Effect of the Configuration of the Screw Fixation on the Interfragmentary StrainBoonthum WongchaiProblem statement: The interfragmentary strain (εIF) is the important parameter for femur fracture healing. The Dynamic Compression Plate (DCP) is commonly used in femur fracture. The DCP and the fractured femur are fixed by using the conventional screws. Approach: This research is proposed to investigate the effect of configuration of the screw fixation on the interfragmentary stain by using Finite … …American Journal of Applied Sciences, Vol. 9, Issue 6 · 15 Mar 2012 · 7,031 accessesView PDFCite
Research ArticleOpen accessIn the keywordsStress Prediction in the Dynamic Compression Plate with Changing the Configuration of the Screw FixationBoonthum WongchaiProblem statement: Human femur fracture is one of the most frequent type of bone fractures. One of the widely used methods in an internal fixation is an application of the Dynamic Compression Plate (DCP). The configuration of the screw fixation plays a major role of the DCP stress. Approach: This research is proposed to investigate the stress distribution in the … …Journal of Computer Science, Vol. 7, Issue 4 · 4 Apr 2011 · 7,618 accessesView PDFCite
Research ArticleOpen accessIn the keywordsGray-Level Co-occurrence Matrix Bone Fracture DetectionHum Yan Chai, Lai Khin Wee, Tan Tian Swee et al.Problem statement: Currently doctors in orthopedic wards inspect the bone x-ray images according to their experience and knowledge in bone fracture analysis. Manual examination of x-rays has multitude drawbacks. The process is time-consuming and subjective. Approach: Since detection of fractures is an important orthopedics and radiologic problem and therefore a Computer Aided Detection(CAD) system should be developed to improve the … …American Journal of Applied Sciences, Vol. 8, Issue 1 · 31 Jan 2011 · 8,968 accessesView PDFCite
Research ArticleOpen accessIn the keywordsRelation of Plate Strain and Distance Between Plate and BoneBoonthum WongchaiThe Limited Contact Dynamics Compression Plate (LC-DCP) is normally used in bone fractured with the locking screws. The released distance between the LC-DCP and the bone could bring about the convenience of periosteal blood transportation. However the exceeding distance may cause the plate strain reach yield point and make the LC-DCP deform into plastic zone. This research proposes a study … …American Journal of Applied Sciences, Vol. 10, Issue 11 · 5 Oct 2013 · 6,546 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffect of the Screw Torque Level on the Interfragmentary Strain and the Interfragmentary ModulusBoonthum WongchaiThe screw torque is applied at the screw head to fix the plate and the bone. It generates the compressive force between the plate and the bone to stabilize them. The interfragmentary strain is the main factor for healing the bone fractured. The screw torque level affects the interfragmentary strain and the stability of the fixation between the plates an … …American Journal of Applied Sciences, Vol. 10, Issue 8 · 24 Jul 2013 · 6,469 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Effect of Pulsed Electromagnetic Field Exposure on Fracture Healing Through the Wnt Signal PathwayUmiatin U, Ismail Hadisoebroto Dilogo, Puji Sari, Sastra Kusuma WijayaPulsed Electromagnetic Fields (PEMF) is reported to encourage the healing of nonunion fractures. However, the mechanism by which this occurs is still not known. Wnt signaling pathways are believed to be important signaling pathways in bone formation. This study will evaluate the healing of delayed union femur fracture, given PEMF exposure. 48 Spraque Dawley rats were fracturized at the left … …OnLine Journal of Biological Sciences, Vol. 20, Issue 4 · 14 Dec 2020 · 6,653 accessesView PDFCite