Using 3D Scanning Techniques in Orthopedic Systems Modeling

Balaşa, Mihai-Constantin; Cuculici, Ştefan; Pantu, Cosmin; Mihai, Simona; Negrea, Alexis-Daniel; Zdrafcu, Mihai-Octavian; Let, Dorin-Dacian; Filip, Viviana; Cristea, Ștefan

doi:10.1515/bsmm-2017-0016

Cited by 9 publications

(5 citation statements)

References 6 publications

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“…Reference source not found.) with an ExaScan 3D scanner [9] and obtained a complex 3D surface, Figure 2, which we converted into a solid body. The result of scanning has a very good fidelity due to the large number of surfaces / meshes obtained [9].…”

Section: Working Methods and Resources Usedmentioning

confidence: 99%

“…with an ExaScan 3D scanner [9] and obtained a complex 3D surface, Figure 2, which we converted into a solid body. The result of scanning has a very good fidelity due to the large number of surfaces / meshes obtained [9]. But this very multitude of surfaces has created difficulties in the finite element analysis of the tibial-knee implant assembly.…”

Section: Working Methods and Resources Usedmentioning

confidence: 99%

“…In order to succeed, we used the surface obtained by 3D scanning, processed in CATIA ( Fig. 2b) [9], which we named reference model. The use of the reference model greatly facilitates the shaping of the tibial bone.…”

Section: Figure 1: Tibia Real Bonementioning

confidence: 99%

“…Tibial bone modeling in Solid Works was not an easy task due to irregular shaped surfaces that make up the bone. That's why we started from the virtual 3D model [9], through Reverse Engineering techniques. Since the bone does not have the same material properties over its entire length [5], we have created three parts: the shell (which will receive the properties of the compact / cortical bone), the proximal part and the distal part (which will receive the properties of the spongy bone), and through the assembly the virtual model of the tibia was created.…”

Section: Conclusion Future Research Directionsmentioning

confidence: 99%

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Modelling the Tibial Bone Using Cad Techniques, Starting From the 3d Scan Model

2018

IJOMAM

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To improve the long-term quality of life for patients with major joint problems, choosing an orthopedic implant based on patient particularities is essential. In this sense, numerical modeling of the bone and implant is useful, assembling them and simulating the behavior of this ensemble over time, taking into account the most accurate features of the bone, such as varusvalgus deformities, osteoporotic diseases, etc. The need to use CAD 3D modeling techniques thus appeared. Because bone is irregularly shaped, consisting of more complex 3D surfaces it is difficult to build in Solid Works. That's why, to build it, we started from the virtual 3D scan model with the ExaScan scanner. Once the virtual model has been obtained through CAD techniques, it will be adapted to the patient's particularities (dimensions, bone mass, eventual deformities, etc.). The objective of this paper is numerical modeling of the tibial bone using CAD techniques, starting from the virtual model obtained by 3D scanning.

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Section: Working Methods and Resources Usedmentioning

confidence: 99%

Section: Working Methods and Resources Usedmentioning

confidence: 99%

Section: Figure 1: Tibia Real Bonementioning

confidence: 99%

Section: Conclusion Future Research Directionsmentioning

confidence: 99%

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Modelling the Tibial Bone Using Cad Techniques, Starting From the 3d Scan Model

2018

IJOMAM

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“…[4] In order to study the static and dynamic mechanical behaviour of the tibia-knee implant assembly, we used the Solid Works software to create the virtual model of a 320 mm-long tibial bone (based on an existing physical model which was previously 3D scanned) with the thickness of the cortical bone (i.e., the compact outer surface) varying between 0.8 mm (at the extremities, in the knee and the ankle areas) and 4 mm (in the middle area) [5]. The same software was used to create the components of the implant (based on an existing physical model of a widely-used standard prosthesis), including the cement used for fixation [6]. Then we used the finite element method to study the mechanical behavior of the bone-implant assembly.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Static and Dynamic Mechanical Behavior of a Tibial Bone-Knee Implant Assembly Without a Tibial Extension

2019

IJOMAM

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The ever-growing number of total knee replacement (TKR) surgical procedures has brought a proportional increase in the number of knee replacement revision operations. Among the causes of the early failure of a knee implant are the weakening and displacement of the tibial component. To avoid revision surgery and extend the lifespan of the implant, it is really useful to perform a finite element analysis in order to identify the areas that may be prone to cause the weakening of the tibial component. The purpose of this paper is the virtual modeling of the tibia-knee implant assembly and the analysis of its mechanical behavior both in the static and the dynamic regime. For this purpose, we will look at the case of an implant without tibial extension and analyze the healthy bone in comparison with the osteoporotic bone. The results from the static stress, fatigue, linear and nonlinear dynamic stress tests confirm that the healthy bone has a higher mechanical strength and a lower degree of damage than the affected bone, under the same stress conditions.

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