Flatfoot and normal foot a comparative analysis of the stress shielding

Filardi, V.

doi:10.1016/j.jor.2018.08.002

Cited by 40 publications

(23 citation statements)

References 21 publications

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“…This phenomenon might be the reason for the higher von Mises stress among the healthy group in terms of the lateral metatarsal, talus, and navicular bones rather than the medial metatarsal in the stance phase. The flatfoot group had a more intensive stress-shielding map than the healthy foot group [ 11 ] as indicated by our results. However, flatfoot showed maximum stress on the fourth metatarsal, which was different from the first metatarsal found by Filardi [ 11 ].…”

Section: Discussionmentioning

confidence: 54%

“…The flatfoot group had a more intensive stress-shielding map than the healthy foot group [ 11 ] as indicated by our results. However, flatfoot showed maximum stress on the fourth metatarsal, which was different from the first metatarsal found by Filardi [ 11 ]. The talonavicular joint everted and the tibiotalar joint plantar flexed significantly in flatfoot, which resulted in joint instability and load increase when the hindfoot was subjected to stress [ 32 ].…”

Section: Discussionmentioning

confidence: 54%

“…Changes in foot structure can lead to alteration in foot mechanics and function limits [ 29 , 30 ]. During normal walking, heel contact from a supinated position gradually changes to the pronated position until stance phase, and the von Mises stress spreads from around the calcaneus to the metatarsals and phalanges [ 11 ]. Therefore, the tendency of foot enstrophe likely shifted the foot pressure to the lateral metatarsal [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

“…The fourth and fifth metatarsals, cuboid, and calcaneus form the lateral longitudinal arch, which supports an upright posture [ 10 ]. Foot deformation changes stress distribution, which causes pain and dysfunction, such as flatfoot and clubfoot [ 11 , 12 ]. Research on the stress distribution of the internal structure contributes to the analysis of foot biomechanics and treatment strategies.…”

Section: Introductionmentioning

confidence: 99%

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Three-Dimensional Finite Element Analysis and Biomechanical Analysis of Midfoot von Mises Stress Levels in Flatfoot, Clubfoot, and Lisfranc Joint Injury

Wang

Zhang

et al. 2021

Med Sci Monit

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Background Midfoot deformity and injury can affect the internal pressure distribution of the foot. This study aimed to use 3D finite element and biomechanical analyses of midfoot von Mises stress levels in flatfoot, clubfoot, and Lisfranc joint injury. Material/Methods Normal feet, flatfeet, clubfeet (30 individuals each), and Lisfranc injuries (50 individuals) were reconstructed by CT, and 3D finite element models were established by ABAQUS. Spring element was used to simulate the plantar fascia and ligaments and set hyperelastic coefficients in encapsulated bone and ligaments. The stance phase was simulated by applying 350 N on the top of the talus. The von Mises stress of the feet and ankle was visualized and analyzed. Results The von Mises stress on healthy feet was higher in the lateral metatarsal and ankle bones than in the medial metatarsal bone. Among the flatfoot group, the stress on the metatarsals, talus, and navicular bones was significantly increased compared with that on healthy feet. Among patients with clubfeet, stress was mainly concentrated on the talus, and stress on the lateral metatarsal and navicular bones was significantly lower. The von Mises stress on the fractured bone was decreased, and the stress on the bone adjacent to the fractured bone was higher in Lisfranc injury. During bone dislocation alone or fracture accompanied by dislocation, the von Mises stress of the dislocated bone tended to be constant or increased. Conclusions Prediction of von Mises stress distribution may be used clinically to evaluate the effects of deformity and injury on changes in structure and internal pressure distribution on the midfoot.

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Section: Discussionmentioning

confidence: 54%

Section: Discussionmentioning

confidence: 54%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Three-Dimensional Finite Element Analysis and Biomechanical Analysis of Midfoot von Mises Stress Levels in Flatfoot, Clubfoot, and Lisfranc Joint Injury

Wang

Zhang

et al. 2021

Med Sci Monit

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“…In literature, different kind of prosthesis have been investigated and compared 13,14 investigating the complete bony chain or single parts. 8,15,16 In another paper, Filardi 17 compared two implanted tibias, by imposing a vertical load of 980 N.…”

Section: Discussionmentioning

confidence: 99%

Healing of tibial comminuted fractures by the meaning of an innovative intramedullary nail

Filardi

2019

Journal of Orthopaedics

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In this paper, an innovative design of prosthesis, conceived to heal the comminuted fractures of long bones has been investigated. The proposed prosthesis consists of two shell valves hinged to each other by a central pin and bearing slits along the surface in such a way as to guarantee the exchange of body fluids and at the same time ensure the structural stability of the bone. Two screws then hold the two valves together. The operative technique for the introduction of this type of prosthesis for the decomposed fracture of long bones consists in the incision of the fracture site, introduction of the open shell prosthesis with reduction of the fracture and composition of the bone fragments, closure by means of fixing screws of the prosthesis shell, stitching open wound flaps. A complete numerical FE model of an implanted femur was analyzed, by considering a vertical load of 980 N. Analyses confirmed results, in terms of mechanical performances, comparable with the others traditional systems of prosthesis.

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Design and Development of Machine Learning Model for Osteoarthritis Identification

Babu

Reddy

Jayanthi³

et al. 2021

Innovations in Computer Science and Engineering

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Flatfoot and normal foot a comparative analysis of the stress shielding

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

Cited by 40 publications

References 21 publications

Three-Dimensional Finite Element Analysis and Biomechanical Analysis of Midfoot von Mises Stress Levels in Flatfoot, Clubfoot, and Lisfranc Joint Injury

Three-Dimensional Finite Element Analysis and Biomechanical Analysis of Midfoot von Mises Stress Levels in Flatfoot, Clubfoot, and Lisfranc Joint Injury

Healing of tibial comminuted fractures by the meaning of an innovative intramedullary nail

Design and Development of Machine Learning Model for Osteoarthritis Identification

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