Comparative Study of Femur Bone Having Different Boundary Conditions and Bone Structure Using Finite Element Method

Chethan, K N; Zuber, Mohammad; Bhat, Shyamasunder N; Shenoy, Bhaskar

doi:10.2174/1874120701812010115

Cited by 20 publications

(9 citation statements)

References 42 publications

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“…In this analytical study of femur, the institutional ethical clearance was obtained from Kasturba Medical College, MAHE, Manipal. Anonymized healthy male CT scans were obtained from Kasturba Medical College, Manipal for the present study [Age of the patient was 36 years and length of the femur was 461mm (Weight 76kgs)] [22]. Philips Brilliance 64 channel CT scanner was used to obtain the CT DICOM images with slice thickness 0.625mm.…”

Section: Methodsmentioning

confidence: 99%

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Finite Element Analysis of Different Hip Implant Designs along with Femur under Static Loading Conditions

et al. 2019

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Background: The hip joint is the largest joint after the knee, which gives stability to the whole human structure. The hip joint consists of a femoral head which articulates with the acetabulum. Due to age and wear between the joints, these joints need to be replaced with implants which can function just as a natural joint. Since the early 19th century, the hip joint arthroplasty has evolved, and many advances have been taken in the field which improved the whole procedure. Currently, there is a wide variety of implants available varying in the length of stem, shapes, and sizes. Material and Methods: In this analytical study of femur, circular, oval, ellipse and trapezoidal-shaped stem designs are considered in the present study. The human femur is modeled using Mimics. CATIA V-6 is used to model the implant models. Static structural analysis is carried out using ANSYS R-19 to evaluate the best implant design. Results:All the four hip implants exhibited the von Mises stresses, lesser than its yielded strength. However, circular and trapezoidal-shaped stems have less von Mises stress compared to ellipse and oval. Conclusion:This study shows the behavior of different implant designs when their cross-sections are varied. Further, these implants can be considered for dynamic analysis considering different gait cycles. By optimizing the implant design, life expectancy of the implant can be improved, which will avoid the revision of the hip implant in active adult patients.

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Section: Methodsmentioning

confidence: 99%

“…Further, the model is used in CATIA V-6 for smoothing and removing the irregularities in the model outer geometry. The modeled femur bone mimics the natural joint [22]. To implant the designed stem into the femur, the femur is bisected from the greater trochanter and the femoral head is removed [26].…”

Section: Methodsmentioning

confidence: 99%

Finite Element Analysis of Different Hip Implant Designs along with Femur under Static Loading Conditions

et al. 2019

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“…Whereas the non-modular neck has only 10 options [6, 7]. In addition to design, many types of materials are used to make these implants [8, 9]. The materials used in hip implants such as cobalt chromium alloy, titanium alloy, stainless steel are popular because of their biocompatibility property [10].…”

Section: Introductionmentioning

confidence: 99%

Static structural analysis of different stem designs used in total hip arthroplasty using finite element method

Chethan

Zuber

Bhat

et al. 2019

Heliyon

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Abstarct Background The Hip joint is the primary joint which gives stability to the human body. The wear and tear associated with age and other factors, require these joints to be replaced by implants using hip arthroplasty surgeries. Cobalt chromium alloy (CoCr), titanium alloy, stainless steel are some of the most common hip joint materials used for hip implants. The design requirement for hip joint implants are very stringent to avoid revision joint surgeries due to aseptic loosening. There are various choices in shapes and materials used for stem and acetabular designs. This makes it more difficult to make an informed decision on the type of design and material that can be used for hip implants. Methods Circular, Oval, ellipse and trapezoidal designs with three individual cross sections (defined as profile 1, profile 2 and profile 3) are considered for the study. All models are modeled using CATIA V-6. Static structural analysis is performed using ANSYS R-19 to arrive at the best possible design and material combination for stem and acetabular cup. Results It was found that, profile 2 of all the four designs has the lowest possible deformation and von Mises stress when compared to profile 1 and profile 2. In general, profile 2 with trapezoidal stem has best outcomes in terms of its mechanical properties. Besides, stem designed with material CoCr and its associated acetabular cup with CoC (ceramic on ceramic) material can produce an implant having better properties and longer durability. Conclusions CoCr was found to be the preferred choice of material for stem design. It was also observed that, irrespective of material considered for the analysis profile 2 with trapezoidal stem showcased lesser deformation and von Mises stress over the other eleven models. For analysis involving acetabular cups, CoC implants exhibited better mechanical properties over the conventional CoPE (Ceramic on polyethylene) materials such as Ultra-high molecular weight polyethylene (UHMWPE). It is inferred from the findings of this study that, the profile 2 with trapezoidal stem design made of CoCr material and acetabular cup made of CoC material is best suited for hip joint implants.

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“…The DICOM data of enrolled hips were loaded into the Mimics (Materialize, Belgium), and the traditional threshold algorithm was used to segment the bone and construct a 3D shell model. Surgeons confirmed the final mask, 17,18 and reconstructed 3D models were carefully improved by executing the smooth operation to reconstruct the original surface profile in order to ensure convergence during FEA.…”

Section: Construction Of Three-dimensional Model Of Hip Jointmentioning

confidence: 99%

Mechanical influence of periacetabular osteotomy on late total hip arthroplasty

Chen

2023

Numer Methods Biomed Eng

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Periacetabular osteotomy (PAO) is an effective technique to treat symptomatic hip dysplasia. However, following PAO, some patients still experience persistent pain or development of hip arthritis, requiring total hip arthroplasty (THA). Issues such as whether patients with PAO are necessarily at increased risk of post-THA complications and revision of the prosthesis remain debatable. The purpose of this study was to evaluate the biomechanical influence of PAO on the acetabulum after THA by finite element analysis. Eight patients with developmental dysplasia of the hip (DDH) diagnosed in the Fourth Medical Center of the PLA General Hospital were enrolled in this research. Patientspecific hip joint models were reconstructed from computed tomography scans,

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Comparative Study of Femur Bone Having Different Boundary Conditions and Bone Structure Using Finite Element Method

Cited by 20 publications

References 42 publications

Finite Element Analysis of Different Hip Implant Designs along with Femur under Static Loading Conditions

Finite Element Analysis of Different Hip Implant Designs along with Femur under Static Loading Conditions

Static structural analysis of different stem designs used in total hip arthroplasty using finite element method

Mechanical influence of periacetabular osteotomy on late total hip arthroplasty

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