Biomechanical Finite Element Method Model of the Proximal Carpal Row and Experimental Validation

Marqués, Rafael; Melchor, Juan; Sánchez‐Montesinos, Indalecio; Roda, Olga; Rus, Guillermo; Hernández‐Cortés, Pedro

doi:10.3389/fphys.2021.749372

Cited by 8 publications

(7 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Anatomically, a type 2 wrist is considered to have a more stable midcarpal joint due to the additional facet with the hamate. 12, 13 Rhee et al concluded that in proven scapholunate dissociation, type 2 lunates were associated with a lower incidence of dorsal intercalated segment instability. 15,16 This study's finding that in a type 2 wrist the carpal bones move in the same direction with excision of the distal pole of the scaphoid, suggests that the bones move as one unit, held together by the more anatomically stable midcarpal joint.…”

Section: Discussionmentioning

confidence: 99%

“…The bones were given the material properties of cortical bone based on the results from several literature sources. [12][13][14] Cancellous bone was omitted in this study, as the literature has shown minimal influence of cancellous bone on force transference and displacement in carpal bones. 13 The scaphoid was then split into proximal and distal halves by cutting the bone at a 40degree angle from its base with the ulna.…”

Section: Simulation Preparationmentioning

confidence: 99%

See 1 more Smart Citation

Excision of the Distal Pole of the Scaphoid and the Midcarpal Joint

Izard,

Parody,

Glickel

et al. 2024

J Wrist Surg

View full text Add to dashboard Cite

Background Excision of the distal pole of the scaphoid is used to treat arthritis of the scaphotrapezial trapezoid (STT), radioscaphoid joint, and arthritis following scaphoid nonunion. Some patients develop midcarpal instability limiting utilization of this technique. Why some wrists develop postoperative instability while others do not, remains unclear. Questions/Purposes To identify the wrists prone to developing midcarpal joint instability we evaluated the effect of midcarpal joint structure on force transfer through the wrist, we hypothesized that the force transfer will be further altered when a distal pole excision is performed and that midcarpal joint structure will affect force transfer. Patients and Methods We used finite element analysis based on 19 computer tomography wrist scans. Nine type 1 (lunate has a facet with the capitate alone) and 10 type 2 (lunate has facets with both the capitate and hamate) models were prepared. A 200 N force was evenly split and applied to the dorsal crests of the trapezoid and capitate (100 N along each crest) to replicate the performance of a knuckle push-up. Displacement of the trapezoid, trapezium, scaphoid, capitate, and hamate was measured along each axis after the applied load. The simulation model was used to predict motion at the capitate and STT joint with excision of the distal pole. Results Excision of the distal pole of the scaphoid affected the transfer of forces significantly (∼200% all bones in all directions) in all wrists. There are significant differences in force transfer between type 1 and type 2 wrists in the amount of force transferred (type 1 > type 2), in the percent difference from an intact wrist (type 1 > type 2) and in the direction of displacement (type 1 the bones moved in different directions while type 2 wrists moved as one block). Conclusion This study suggests that midcarpal joint structure affects force transfer through the wrist and may predict wrist behavior following excision of the distal pole of the scaphoid. Specifically, type 1 wrists may be more prone to midcarpal joint collapse after excision. Level of evidence: 1.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Simulation Preparationmentioning

confidence: 99%

Excision of the Distal Pole of the Scaphoid and the Midcarpal Joint

Izard,

Parody,

Glickel

et al. 2024

J Wrist Surg

View full text Add to dashboard Cite

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%

“…Scaphoid and lunate bones and scaffold were included in the calculation. Marqués et al 2022 [13] investigated distal carpal row moves. A three-dimensional model of the proximal carpal row was created through DICOM images.…”

Section: Introductionmentioning

confidence: 99%

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

2023

View full text Add to dashboard Cite

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.

show abstract

“…Ligaments constitute an important component of wrist mechanics providing mechanical stability. 39 They have hyperelastic behavior 40 and operate only in tension. 41 A common technique is to model ligaments as springs to simulate their flexibility as semirigid tissue.…”

Section: Cartilage Modelingmentioning

confidence: 99%

Finite Element Modeling of the Human Wrist: A Review

et al. 2023

View full text Add to dashboard Cite

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.

show abstract

Biomechanical Finite Element Method Model of the Proximal Carpal Row and Experimental Validation

Cited by 8 publications

References 32 publications

Excision of the Distal Pole of the Scaphoid and the Midcarpal Joint

Excision of the Distal Pole of the Scaphoid and the Midcarpal Joint

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

Finite Element Modeling of the Human Wrist: A Review

Contact Info

Product

Resources

About