Toward integration of geometric morphometrics and computational biomechanics: New methods for 3D virtual reconstruction and quantitative analysis of Finite Element Models

Parr, William C.; Wroe, Stephen; Chamoli, Uphar; Richards, Heather S; McCurry, Matthew R.; Clausen, Philip; McHenry, Colin R.

doi:10.1016/j.jtbi.2012.01.030

Cited by 94 publications

(80 citation statements)

References 33 publications

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“…In this case the lines extending up and down the box (called whiskers) included 80% of the values. This way to represent the stress distribution follows the idea of Dumont et al (2005), Parr et al (2012) or Figueirido et al (2014) to represent it via frequency plots but facilitates the comparison between models and includes the corrections to account for the uniformity of the mesh. On this line to standardize the mesh to remove the effect of the non-homogeneity, the work of Tseng (2008) proposed an alteration in the values of each element with a correction based in the median values of the size of the element.…”

Section: Case Of Study: Ecomorphology Of Cingulata's Mandiblesmentioning

confidence: 99%

“…Quantifying stress data at specific points has been useful in ecomorphological analyses (Fortuny et al, 2011;Serrano-Fochs et al, 2015), but these analyses are hindered by the lack of information about the whole model. Dumont et al (2005) and McHenry et al (2007) first used Von Mises Stress values as a descriptive statistic to compare the results of different FE analyses, and this method has been used frequently since then (Parr et al, 2012;Aquilina et al, 2013;Figueirido et al, 2014;Fish and Stayton, 2014;Neenan et al, 2014). Recently, Tseng approached the same problem with a solution based in the normalization of the values of each element of the mesh to obtain statistical metrics to compare different models (Tseng, 2008;Tseng and Binder, 2010;Tseng et al, 2011a).…”

Section: Introductionmentioning

confidence: 99%

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Accounting for differences in element size and homogeneity when comparing Finite Element models: Armadillos as a case study

Marcé‐Nogué

Esteban-Trivigno²,

Pérez

et al. 2016

Palaeontologia Electronica

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Computing the average Von Mises stress of Finite Element Models to obtain a single measurement that represents the relative strength of vertebrate structures has been used recently in different works in palaeobiology. However, due to the nature of the Finite Element Analysis (FEA) data, which depends on the size of the elements of the mesh, this approach needs to be fully developed taking into account this influence of the size elements in the results. In this work, we proposed a Mesh-Weighted Arithmetic Mean as the adequate central tendency statistic for non-uniform meshes. On the other hand, when other statistical tools are used, we propose a Quasi-Ideal Mesh that takes into account the differences in size of the elements. Firstly, in order to analyse our proposed approach, one Cingulata mandible has been used generating different meshes. Afterwards, FEA has been applied in a case study in 20 different mandibles belonging to 14 species of Cingulata. Our results suggest that the proposed methodologies are suitable to compare different patterns of stress distribution. In particular, the methods proposed have been shown to be extremely useful when analysing the biomechanics of vertebrate bone structures that can be modelled as planar models in an interspecific comparative framework.

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Section: Case Of Study: Ecomorphology Of Cingulata's Mandiblesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Accounting for differences in element size and homogeneity when comparing Finite Element models: Armadillos as a case study

Marcé‐Nogué

Esteban-Trivigno²,

Pérez

et al. 2016

Palaeontologia Electronica

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“…To compare FEA results with the surface model of the tibia generated from microCT taken during compression, we modified the method of Parr et al (2012) which used the mean displacement values of the closest 12 FEM nodes to selected x,y,z coordinate points. The nearest 12 nodes equate to the nearest three 4-noded tetrahedral elements, i.e.…”

Section: Landmark Based Statistical Comparison Between Fea and Microcmentioning

confidence: 99%

Finite element analysis of a micromechanical model of bone and a new 3D approach to validation

Evans¹,

Parr²,

Clausen³

et al. 2012

Journal of Biomechanics

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“…We also acknowledge that there is significant variability in this range and the formerly described Lewinnek 'safe zones' have since been shown to vary based on the dynamics of the patient as well as the pelvis position in the sagittal plane changes throughout different stance positions and functional activities [23,24]. This position as well as the pelvis was fixed throughout the study with the femur rotating about the centre of rotation of the hip joint (x,y,z = 0,0,0 in the GCS).…”

Section: Methodsmentioning

confidence: 93%

Elevated Lip Liner Positions Improving Stability in Total Hip Arthroplasty – An Experimental Study

et al. 2018

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Background: The use of elevated lip polyethylene liners with the acetabular component is relatively common in Total Hip Arthroplasty (THA). Elevated lip liners increase stability of the THA by increasing the jump distance in one direction. However, the elevated lip, conversely, also reduces the primary arc in the opposite direction and leads to early impingement of the neck on the elevated lip, potentially causing instability.The aim of the present study is to determine the total range of motion of the femoral head component within the acetabular component with the elevated lip liner in different orientations within the acetabular cup.Methods: We introduce a novel experimental (ex-vivo) framework for studying the effects lip liner orientation on the range of motion of the femoral component. For constant acetabular cup orientation, the elevated lip liner was positioned superiorly and inferiorly. The femoral component range of motion in the coronal, sagittal and axial plane was measured. To avoid any confounding influences of out of plane motion, the femoral component was constrained to move in the tested plane.Results: This experimental set up introduces a rigorous framework in which to test the effects of elevated lip liner orientations on the range of motion of the femoral head component in abduction, adduction, flexion, extension and rotation. The movements of this experimental set-up are directly informative of patient's maximum potential postoperative range of motion. Initial results show that an in-

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Toward integration of geometric morphometrics and computational biomechanics: New methods for 3D virtual reconstruction and quantitative analysis of Finite Element Models

Cited by 94 publications

References 33 publications

Accounting for differences in element size and homogeneity when comparing Finite Element models: Armadillos as a case study

Accounting for differences in element size and homogeneity when comparing Finite Element models: Armadillos as a case study

Finite element analysis of a micromechanical model of bone and a new 3D approach to validation

Elevated Lip Liner Positions Improving Stability in Total Hip Arthroplasty – An Experimental Study

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