Apparent Young's modulus of human radius using inverse finite-element method

Bosisio, M R; Talmant, Maryline; Skalli, Wafa; Laugier, Pascal; Mitton, David

doi:10.1016/j.jbiomech.2006.09.018

Cited by 60 publications

(28 citation statements)

References 29 publications

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“…This seems essentially due to the difference in Young's modulus of the radius and the TFCC which proximally cover the lunate. Cortical bone of the radius has a Young's modulus of 13.8 to 16 GPa, [21][22][23] cartilage 10 to 15 MPa, [23][24][25][26] and TFCC only 10 KPa. 27 This leads to intraosseous shearing in the spans of the lunate which crushes against the hardest area.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Kienböck's Disease Treated by Camembert Osteotomy at Seven Years

Camus

Overstraeten

2019

Jnl Wrist Surg

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In Kienböck's disease, radius shortening osteotomy is the most common treatment. The Camembert procedure is a wedge osteotomy that shortens only the radius facing the lunate. Its aim is to offload the lunate by redirecting the compression stress of the grip forces toward the scaphoid. The purpose of this study was to determine if the Camembert osteotomy is effective in improving clinical symptoms and limits lunate collapse. The series include 10 patients who underwent a Camembert osteotomy for Kienböck's disease between 2002 and 2012 (one bilaterally). They are six men and four women, aged 40.6 years. Five patients had an additional ulnar shortening osteotomy if ulnar variance was neutral or positive. The mean follow-up is 7 years. Preoperatively, range of motion, grip strength, pain, and functional scores were poor. All osteotomies healed within 3 months. Extension, ulnar deviation, grip, functional scores improved significantly. In 10 cases, there were improvement in the T1 and T2 signals on the magnetic resonance imaging (MRI). There was no lunate collapse. This series shows good results with no worsening of the lunate shape. There was no ulnocarpal impingement. The Camembert osteotomy proposes to offload the lunate and redirect strains toward the scaphoid. The supposed interest is to protect the lunate from collapse. In this small series, the Camembert osteotomy improved function in patients with early stage Kienböck's disease. MRI aspects improve in most cases and no patients collapsed. Camembert can be used in combination with a Sennwald's ulnar shortening when ulnar variance is neutral or positive. Authors propose this procedure for Lichtman's stages 1–2–3A if there are no cartilage or ligament lesions. This is a Level IV, case series study.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Kienböck's Disease Treated by Camembert Osteotomy at Seven Years

Camus

Overstraeten

2019

Jnl Wrist Surg

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“…Several inverse studies have been performed to measure trabec ular bone tissue properties [58][59][60][61][62]. The principle of these studies was to image the bone geometry with pCT and measure the apparent mechanical properties.…”

Section: Discussionmentioning

confidence: 99%

“…The problem can be turned around in a number of dif ferent ways resulting in different types of inverse problems [54]. This has been done for apparent stiffness or strength in trabecular bone specimens [58], human radius [59], and mandibular bone [60]. This has been done for apparent stiffness or strength in trabecular bone specimens [58], human radius [59], and mandibular bone [60].…”

Section: Introductionmentioning

confidence: 99%

Inverse Finite Element Modeling for Characterization of Local Elastic Properties in Image-Guided Failure Assessment of Human Trabecular Bone

Zwahlen

Christen

Ruffoni

et al. 2015

Journal of Biomechanical Engineering

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The local interpretation of microfinite element (μFE) simulations plays a pivotal role for studying bone structure–function relationships such as failure processes and bone remodeling.In the past μFE simulations have been successfully validated on the apparent level,however, at the tissue level validations are sparse and less promising. Furthermore,intra trabecular heterogeneity of the material properties has been shown by experimental studies. We proposed an inverse μFE algorithm that iteratively changes the tissue level Young's moduli such that the μFE simulation matches the experimental strain measurements.The algorithm is setup as a feedback loop where the modulus is iteratively adapted until the simulated strain matches the experimental strain. The experimental strain of human trabecular bone specimens was calculated from time-lapsed images that were gained by combining mechanical testing and synchrotron radiation microcomputed tomography(SRlCT). The inverse μFE algorithm was able to iterate the heterogeneous distribution of moduli such that the resulting μFE simulations matched artificially generated and experimentally measured strains.

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“…and Young's modulus can be found. In previous research, a lot of formulas for determination Young's modulus from bone tissue density [3]. In the current study, we used the formula (1) taken from [4,9,11]…”

Section: Heterogeneous Materialsmentioning

confidence: 99%

“…where E is Young's modulus in GPa, C is Carter-Hayes correlation constant of value 3.79 and ρ a is apparent density in g/cm 3 , which is calculated from formula (2). The formula is valid for bone tissue density from 0.07 to 2 g/cm 3 . Material properties based on CT numbers (as demonstrated in Fig.…”

Section: Heterogeneous Materialsmentioning

confidence: 99%

On the level of computational model of a human skull: A comparative study

Chamrad

Marcián

Borák

2018

ACM

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In this study, different patient-specific computational models of the skull, which are often used in literature, were investigated, analysed and compared. The purpose of this study was to demonstrate the differences in computational model creation and results in case different computational models based on same computed tomography (CT) dataset are used. The selection of computational model directly influences the values of investigated parameters. The effort is to demonstrate, how the selection of the computational model influences the results of biomechanically relevant parameters. The comparison was based on total displacement of the skull and von Mises strain investigated around predefined paths around the skull. The strain values were evaluated according to criterion from literature. The results were obtained using finite element method. The values of the displacement of the skull were higher in case of considering cancellous bone tissue due to its poor material properties or heterogeneous material properties. The same situation occurred during the evaluation of strain. The values were higher in models which include cancellous bone tissue in the structure.

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Apparent Young's modulus of human radius using inverse finite-element method

Cited by 60 publications

References 29 publications

Evaluation of Kienböck's Disease Treated by Camembert Osteotomy at Seven Years

Evaluation of Kienböck's Disease Treated by Camembert Osteotomy at Seven Years

Inverse Finite Element Modeling for Characterization of Local Elastic Properties in Image-Guided Failure Assessment of Human Trabecular Bone

On the level of computational model of a human skull: A comparative study

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