Load transmission characteristics of limited carpal fusions: a two-dimensional finite element study

Biçen, Ahmet Çağdaş; Gökdemir, Hande; Seber, Sinan; Aydin, Ruhi; Günal, İzge

doi:10.1007/s00590-014-1495-z

Cited by 8 publications

(4 citation statements)

References 12 publications

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“…The studies use 3D models with two exceptions: one 2D 15 model and one pseudo-3D model, 16 that is, 2D geometry, which is then extruded. Unless otherwise stated, for the following sections in this review, all models referred to are 3D.…”

Section: Resultsmentioning

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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Section: Resultsmentioning

confidence: 99%

Finite Element Modeling of the Human Wrist: A Review

et al. 2023

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“…They also found that carpal height ratio did not change and discussed that the mentioned observation may have more clinical relevance than data derived from cadaver studies, although biomechanical studies on cadaver wrists have failed to show definite lunate unloading after capitohamate fusion. 18 , 19 In this context, Chuinard et al concluded that the rationale for treatment of Kienböck's disease by capitohamate fusion lies in relieving the pressure from the nutcracker effect on the lunate caused by impingement between the capitate and the distal radius. 16 Inoue reported good results in Grade 2/3 patients and he discussed his results supported Chuinard's theory.…”

Section: Discussionmentioning

confidence: 99%

Lunate excision with capitohamate fusion in the treatment of stage IIIB and IIIC Kienböck's disease

Tahta¹,

Özcan²,

Yildiz³

et al. 2018

Acta Orthopaedica et Traumatologica Turcica

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ObjectiveThe aim of this study was to report our results of lunate excision combined with capitohamate fusion in the treatment of Kienböck's stage IIIB/IIIC disease.MethodsA total of 7 patients with a mean age 35.2 (SD 11.5) years were enrolled in the study. Pain was the principal reason for surgery. All operations were carried out by the same senior surgeon. Patients were evaluated in terms of range of motion, DASH and VAS scores, satisfaction, and grip/tip/palmar/key pinch strength compared with contralateral sides. Preoperative carpal height indexes and findings of osteoarthritis were determined radiographically and compared with postoperative evaluations.ResultsMean duration of follow up was 15.2 months. Mean DASH and VAS scores were 13.8 2.7 and 2 1.1 respectively. The mean patient satisfaction score was 3.2 0.4 over 4 points. The mean grip strength in the operated hands was 66.4%, palmar pinch was 75.1%, tip pinch was 71.8% and key pinch was 70.4% when compared to the contralateral unaffected sides. The mean flexion range in the operated hands was 58.8%, extension range was 60.3%, radial deviation range was 65.2% and ulnar deviation range was 65.7% when compared to the contralateral sides. There was no significant difference between preoperative and postoperative carpal height ratios (p = 0.086).ConclusionsOur early term results indicate that lunate excision combined with capitohamate fusion may be an alternative treatment option in patients with stage IIIB and IIIC Kienböck's disease.Level of EvidenceLevel IV, Therapeutic study.

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“…The rigidity of the ligament was assumed as 40 N/mm based in the values from 29 for the palmar scaphocapitate carpal ligaments. The values of each spring in the model were set according to the parallel and serial distribution of the springs in the fused and non-fused cases (Table S5).…”

Section: Methodsmentioning

confidence: 99%

The biomechanical importance of the scaphoid-centrale fusion during simulated knuckle-walking and its implications for human locomotor evolution

Püschel

Marcé‐Nogué

Yoxall

et al. 2020

Sci Rep

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inferring the locomotor behaviour of the last common ancestor (LcA) of humans and African apes is still a divisive issue. An African great-ape-like ancestor using knuckle-walking is still the most parsimonious hypothesis for the LCA, despite diverse conflicting lines of evidence. Crucial to this hypothesis is the role of the centrale in the hominoid wrist, since the fusion of this bone with the scaphoid is among the clearest morphological synapomorphies of African apes and hominins. However, the exact functional significance of this fusion remains unclear. We address this question by carrying out finite element simulations of the hominoid wrist during knuckle-walking by virtually generating fused and unfused morphologies in a sample of hominoids. finite element analysis was applied to test the hypothesis that a fused scaphoid-centrale better withstands the loads derived from knuckle-walking. the results show that fused morphologies display lower stress values, hence supporting a biomechanical explanation for the fusion as a functional adaptation for knuckle-walking. this functional interpretation for the fusion contrasts with the current inferred positional behaviour of the earliest hominins, thus suggesting that this morphology was probably retained from an LcA that exhibited knuckle-walking as part of its locomotor repertoire and that was probably later exapted for other functions.

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Load transmission characteristics of limited carpal fusions: a two-dimensional finite element study

Cited by 8 publications

References 12 publications

Finite Element Modeling of the Human Wrist: A Review

Finite Element Modeling of the Human Wrist: A Review

Lunate excision with capitohamate fusion in the treatment of stage IIIB and IIIC Kienböck's disease

The biomechanical importance of the scaphoid-centrale fusion during simulated knuckle-walking and its implications for human locomotor evolution

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