Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2018 Aug 16;15(3):820-825.
doi: 10.1016/j.jor.2018.08.002. eCollection 2018 Sep.

Flatfoot and normal foot a comparative analysis of the stress shielding

V Filardi  1
Affiliations

Flatfoot and normal foot a comparative analysis of the stress shielding

V Filardi. J Orthop. .

Erratum in

Abstract

Objective: this study aims to develop a comprehensive 3D FE model of the foot to investigate the effect of soft tissue stiffness on the plantar pressure distributions and the internal load transfer between bony structures.

Methods: the stress shielding occurring on the plantar surface of a flatfoot was investigated and compared with the mechanical behavior of a healthy foot, trough baropodometric analyses and the FE models.

Results: the flatfoot evidences a more intensive stress-shielding map with significant values of pressure acting on the medial plantar fascia.

Conclusion: Clinically and radiographically, symptomatic adult flatfoot is a complex abnormality involving all three dimensions and multiple joints within the foot.

Keywords: CAD; FE analysis; Foot model.

PubMed Disclaimer

Figures

Fig. 1
Fig. 1
Supporting surface of the foot “aeches on arches”.
Fig. 2
Fig. 2
2a)Normal Calcaneal pitch. 2b) Calcaneal pitch with flatfoot.
Fig. 3
Fig. 3
Numerical model and loading and constrain setup.
Fig. 4
Fig. 4
Contour maps of plantar pressure evaluated in normal feet and flatfoot.
Fig. 5
Fig. 5
Contour maps of Eq. V. Mises stress[MPa] evaluated on the plantar surface of the feet.
Fig. 6
Fig. 6
Contour maps of Eq. V. Mises stress[MPa] evaluated on the bony parts of the feet.
See this image and copyright information in PMC

References

    1. Di Giovanni J.E., Smith S.D. Normal biomechanics of the adult rearfoot: a radiographic analysis. J Am Podiatry Assoc. 1976;66(11):812–824. - PubMed
    1. Figura M.A., Smith S.D. Frontal plane deformity of the subtalar joint in flexible flat foot: a preliminary study. J Am Podiatry Assoc. 1976;66(11):867–872. - PubMed
    1. McCormack A.P., Ching R.P., Sangeorzan B.J. Biomechanics of procedures used in adult flatfoot deformity. Foot Ankle Clin. 2001;6(1):15–23. - PubMed
    1. Lewis G.S. The Pennsylvania State University; State College, PA: 2008. Computational Modeling of the Mechanics of Flatfoot Deformity and its Surgical Corrections. Ph.D. dissertation.
    1. Kitaoka H.B., Luo Z., An K. Three-dimensional analysis of flatfoot deformity: cadaver study. Foot Ankle Int. 1998;19(7):447–451. - PubMed