The effect of various heights of high‐heeled shoes on foot arch deformation: Finite element analysis

Ahmady, A.; Soodmand, Ehsan; Soodmand, Iman; Milani, Thomas L.

doi:10.1186/1757-1146-7-s1-a78

Cited by 6 publications

(10 citation statements)

References 5 publications

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“…The correlation between the local forces and deformity has also been demonstrated by Ahmady et al [ 20 ] , who investigated the effect of heeled footwear on the bones of the ankle, showing that increasing the height of the shoe leads to decreased deformation of the foot arch and to increased Von Mises equivalent stresses in the analyzed bones. At the same time, use of Altair Hyperworks for analysis of dynamic forces during movement was reported, achieving a complete modeling of a full circle of a step in running.…”

Section: Discussionsupporting

confidence: 53%

Finite-element-based 3D computer modeling for personalized treatment planning in clubfoot deformity

et al. 2018

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Rationale:In clubfoot deformity, planning of corrective treatment requires a complex understanding of the foot anatomy, as well as of the geometry and distribution of altered mechanical forces acting at the level of the deformed foot. At the same time, treatment success depends largely on the selection of the most appropriate shape and angles of the customized orthesis developed for foot correction. Therefore, a complex assessment of the intensity and distribution of the mechanical forces at this site is mandatory prior to initiation of any corrective therapy.Patient concerns:We present here the case of a 3-year-old male child with clubfoot deformity, weighting 20 kg, with no other congenital malformations, in whom finite element modeling (FEM) technology associated with a newly developed technique of three-dimensional (3D) computational simulation was applied for personalized treatment planning.Interventions:The FEM-based computational 3D simulation technique allowed selection of the corrective treatment associated with the most physiologic pattern of force distribution at the level of the foot.Outcomes:The proposed technique led to selection of the most appropriate therapy that successfully corrected the foot deformity. After 3D computer simulations, the elongations recorded were 2.71 cm for Achilles tendon, 1.69 cm for anterior tibialis tendon, 1.35 cm for the long flexor of the toes, and 1.69 cm for the long flexor of the hallux. The Von Mises equivalent stress distribution was σ = 4.26 MPa, not exceeding the elastic capacity of the bones, therefore the residual deformations were minimal. The customized treatment selected in this way was highly appropriate for the child, and led to complete recovery of the deformity in three months.Lessons:This case is the first one in which FEM-based computational 3D modeling was applied for selection of treatment strategy in a child with clubfoot. The case reported here illustrates the role of advanced medical computer technology, based on complex image processing, FEM and 3D simulations, in providing an effective clinical decision support tool for personalized treatment selection in children with clubfoot deformity.

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Section: Discussionsupporting

confidence: 53%

Finite-element-based 3D computer modeling for personalized treatment planning in clubfoot deformity

et al. 2018

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“…The bony regions were labeled in all slices of the CT images based on the certain values of Hounsfield units (HU) for bones. The process of labelling of bony structures is a visual and subjective procedure in which a primary HU value for bones was selected from the literature which is around 200–250 up to 3000 [ 28 – 31 ]. The automated segmentation of the bone started by thresholds of HU and was followed by manually editing the slices to obtain more accurate surfaces [ 28 – 31 ].…”

Section: Methodsmentioning

confidence: 99%

“…The process of labelling of bony structures is a visual and subjective procedure in which a primary HU value for bones was selected from the literature which is around 200–250 up to 3000 [ 28 – 31 ]. The automated segmentation of the bone started by thresholds of HU and was followed by manually editing the slices to obtain more accurate surfaces [ 28 – 31 ]. A triangulated surface of the femurs was created with the segmentation software using a semi-automatic method.…”

Section: Methodsmentioning

confidence: 99%

Interlaboratory comparison of femur surface reconstruction from CT data compared to reference optical 3D scan

et al. 2018

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BackgroundThe present study contrasts the accuracy of different reconstructed models with distinctive segmentation methods performed by various experts. Seven research groups reconstructed nine 3D models of one human femur based on an acquired CT image using their own computational methods. As a reference model for accuracy assessment, a 3D surface scan of the human femur was created using an optical measuring system. Prior to comparison, the femur was divided into four areas; “neck and greater trochanter”, “proximal metaphysis”, “diaphysis”, and “distal metaphysis”. The deviation analysis was carried out in GEOMAGIC studio v.2013 software.ResultsThe results revealed that the highest deviation errors occurred in “neck and greater trochanter” area and “proximal metaphysis” area with RMSE of 0.84 and 0.83 mm respectively.ConclusionIn conclusion, this study shows that the average deviation of reconstructed models prepared by experts with various methods, skills and software from the surface 3D scan is lower than 0.79 mm, which is not a significant discrepancy.

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“…Their study evaluated the von Misses stresses, strain, and arch deformation on the foot during standing, proving that the smallest deformation and stretching forces regarding to plantar fascia were present in 2.5-inches high heels. 11 Some authors recommend the use of finite modeling elements even in treatment planning, for outcome prediction and follow-up. Another team of orthopedic surgeons compared four different ligament reconstruction techniques of the ankle with the use of modeled 3D finite elements.…”

Section: Computational Models For Orthopedic Patientsmentioning

confidence: 99%

Medical Use of Finite Element Modeling of the Ankle and Foot

Gozar

Chira

Nagy

et al. 2018

Journal of Interdisciplinary Medicine

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Finite element modeling is a field of medicine with great potential future in experimental studies and in daily clinical practice as well. Computational modeling is currently used in several medical applications including orthopedics, cardiovascular surgery, and dentistry. In orthopedics, this method allows a proper understanding of joint behavior, as well as of more complex articular biomechanics that are encountered in several conditions such as ankle fractures or congenital clubfoot. Currently, there is little data on the development of a 3D finite elementdefined model for congenital clubfoot. This paper aims to summarize the current status of knowledge and applications of finite element modeling of the foot and ankle. Keywords: 3D finite elements, computational modeling, congenital clubfoot, foot and ankle models Horea Gozar • Str. Gheorghe Marinescu nr. 38, 540139 Tîrgu Mureș, Romania. Tel:+40 265 215 551 Alexandru Chira • Str. Constantin Daicoviciu nr. 15, 400020 Cluj-Napoca, Romania. Tel :+ 40 264 401 250 Örs Nagy • Str. Gheorghe Marinescu nr. 38, 540139 Tîrgu Mureș, Romania. Tel:+40 265 215 551

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The effect of various heights of high‐heeled shoes on foot arch deformation: Finite element analysis

Cited by 6 publications

References 5 publications

Finite-element-based 3D computer modeling for personalized treatment planning in clubfoot deformity

Finite-element-based 3D computer modeling for personalized treatment planning in clubfoot deformity

Interlaboratory comparison of femur surface reconstruction from CT data compared to reference optical 3D scan

Medical Use of Finite Element Modeling of the Ankle and Foot

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