Maximum loading of carpal bones during movements: a finite element study

Oflaz, Hakan; Günal, İzge

doi:10.1007/s00590-018-2287-7

Cited by 7 publications

(10 citation statements)

References 13 publications

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“…The wrist ligaments were modelled as described by Nanno (Nanno et al, 2006). They were defined as tension-only linear springs as in previous studies (Anderson et al, 2005;Gislason et al, 2012;Oflaz and Gunal, 2019). In total, 47 ligaments were included in our model to reproduce the wrist joint's stability (Fig.…”

Section: Methodsmentioning

confidence: 99%

Lunate loads following different osteotomies used to treat Kienböck's disease: A 3D finite element analysis

Camus

Aimar

Overstraeten

et al. 2020

Clinical Biomechanics

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Background: One of most accepted principles for treating Kienböck's disease before wrist degeneration settles in is to decompress the lunate by an osteotomy. Several osteotomies have been proposed since 1935. However, they are based on biomechanical hypotheses that are sometimes conflicting: This study compares the decompression effect of radius transverse shortening, radius lateral closing and medial closing wedge osteotomies, capitate shorteningwith and without hamate shorteningand a Camembert-type radius wedge osteotomy with and without ulnar head shortening according to Sennwald. Methods: We built a 3D wrist model using finite elements that included the metacarpal, carpal and forearm bones. All wrist ligaments and Triangular Fibrocartilage Complex were incorporated in the simulation. Load was applied on the metacarpals with the forearm bones fixed. We then applied the different osteotomies to the model. Findings: When load was applied to the wrist, the osteotomies that best unloaded the lunate were the capitate shortening osteotomy combined with hamate shortening and the Camembert osteotomy combined with ulna shortening; the latter was the only osteotomy that completely unloaded the lunate. Interpretation: We think the association of the radius Camembert osteotomy and ulna Sennwald's shortening osteotomy is the most effective procedure to propose in Kienböck's disease.

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Section: Methodsmentioning

confidence: 99%

Lunate loads following different osteotomies used to treat Kienböck's disease: A 3D finite element analysis

Camus

Aimar

Overstraeten

et al. 2020

Clinical Biomechanics

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show abstract

“…The carpal bones move during flexion and extension of the wrist, which changes the geometry of the carpal canal and consequently affects the movement of tendons and the median nerve; this was not taken into account in this study. However, consideration of the carpal bone interaction is a separate complex task considered in many other studies [11][12][13][14][15]. Adding the effect of carpal bone motion would greatly complicate calculations and increase calculation time to an unacceptable level.…”

Section: Limitationsmentioning

confidence: 99%

“…Bones and transverse carpal ligament were modeled as elastic, and skin-fat and muscle were modeled as hyperelastic (Neo-Hookean strain energy potential). Oflaz and Gunal 2018 [11] clarified the loading pattern of each carpal bone during wrist movements. A finite element wrist model was designed using a three-dimensional reconstruction of computed tomographic images from the distal end of the radius and ulna to the proximal third of the metacarpals.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Modeling of the Fingers and Wrist Flexion/Extension Effect on Median Nerve Compression

2023

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Carpal tunnel syndrome (CTS) is the most common pathology among disorders of the peripheral nervous system related to median nerve compression. To our knowledge, there are limited data on the effect of tendon movement on median nerve compression. This study focuses on the understanding of the carpal syndrome by simulating the impact of tendons movement caused by fingers flexion by Finite Element Analysis. Therefore, such modeling is the step toward the development of a personalized technique for value determining median nerve compression. Open-source MRI of the human right hand was used to build patient-specific phalanges of the fingers. Carpal tunnel soft tissues were considered as hyper-elastic materials, while bone structures were considered as elastic ones. The final finite-element model had 40 solid bodies which contacted the joint. Results were obtained for four cases of wrist movements: finger flexion, hand flexion/extension, and wrist extension with subsequent by finger flexion. Compression of the median nerve ranged from 129 Pa to 227 Pa. The results show that compression of the median nerve occurs faster during wrist flexion than during wrist extension or finger flexion. A decrease in compression during finger flexion was noticed with wrist extension followed by finger flexion.

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“…In general, elastic models, whether linear or nonlinear, enable the creation of dependable simulations with validation data that are readily available and do not require excessive computational resources. 1,2,7,[21][22][23][24] Fig. 1 Studies including elastic, hyperelastic, and quantitative computed tomography finite element models.…”

Section: Modelingmentioning

confidence: 99%

Finite Element Modeling of the Human Wrist: A Review

et al. 2023

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Background Understanding wrist biomechanics is important to appreciate and treat the wrist joint. Numerical methods, specifically, finite element method (FEM), have been used to overcome experimental methods' limitations. Due to the complexity of the wrist and difficulty in modeling, there is heterogeneity and lack of consistent methodology in the published studies, challenging our ability to incorporate information gleaned from the various studies. Questions/Purposes This study summarizes the use of FEM to study the wrist in the last decade. Methods We included studies published from 2012 to 2022 from databases: EBSCO, Research4Life, ScienceDirect, and Scopus. Twenty-two studies were included. Results FEM used to study wrist in general, pathology, and treatment include diverse topics and are difficult to compare directly. Most studies evaluate normal wrist mechanics, all modeling the bones, with fewer studies including cartilage and ligamentous structures in the model. The dynamic effect of the tendons on wrist mechanics is rarely accounted for. Conclusion Due to the complexity of wrist mechanics, the current literature remains incomplete. Considering published strategies and modeling techniques may aid in the development of more comprehensive and improved wrist model fidelity.

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Maximum loading of carpal bones during movements: a finite element study

Abstract: Studies on maximum loading of each bone are a new approach and may help to improve the knowledge on wrist mechanics.

Cited by 7 publications

References 13 publications

Lunate loads following different osteotomies used to treat Kienböck's disease: A 3D finite element analysis

Lunate loads following different osteotomies used to treat Kienböck's disease: A 3D finite element analysis

Finite Element Modeling of the Fingers and Wrist Flexion/Extension Effect on Median Nerve Compression

Finite Element Modeling of the Human Wrist: A Review

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