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Correction of foot deformities with hallux valgus by transversal arch restoration

Dygut Jacek, Piwowar Piotr, Detyna Jerzy, Popiela Tadeusz, Kogut Wojciech, Boron Wiktor, Dudek Piotr, Piwowar Monika

Biocybernetics and Biomedical Engineering

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2020

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Vol. 40, no. 4

1556--1567

EN

The paper presents the effects of the application of a new technical solution along with medical procedures. This approach aims to correct the collapsed transverse arch of the foot and thus restore the physiological course of the anatomical structures. In this way, the alignment of the toes is achieved, thus also eliminating valgus of the big toe. In the article are presented results for 19 patients with stage I and 22 patients with stage II of the foot deformities. Patients applied the orthosis at 57 h daily per one year. Physical examination and X-ray scans were used to assess correction progress. Angles between individual bones of the foot were compared. Correction of the transverse arch of the foot reduces the remain toes deformities of the foot (II–V). The HV angle in the group of patients with the degree I deformity before and after the therapy was 18.38 (3.18) and 15.28 (2.68), respectively, and for patients with degree II deformity it was 19.28 (2.98) and 16.3. (3.28). The correction deficit was reduced in stage I from 22% to 1.33% and in stage II from 28% to 8.6% (p < .05). The proposed approach to treating feet with the developed device, ie Forefoot arch-type orthosis: (1) restores spatial arrangement of tendons, bones, and ligaments and prevents the development of foot contractures (2) enables gradual stretching of extra-articular and capsular contractures (3) can reduce forefoot pain and improves the quality of life.

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Constraints on variation of weight-shifting by foot during walking in adolescents with valgus alignment of hallux

Latour Ewa, Arlet Jarosław, Latour Marek, Dworak Lechosław B., Bohatyrewicz Andrzej

Acta of Bioengineering and Biomechanics

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2020

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Vol. 22, no. 3

95--104

EN

Purpose: Etiology of hallux valgus (HV) remains unclear and effective treatments and prophylaxis for this condition are lacking and conclusions of researches concerning HV are inconsistent. Recognition of the function-structure interrelation in foot at the early stage of valgus alignment of first metatarsophalangeus joint (1stMTPJ) would help explain the etiology of HV. Methods: The frequency of weight-shifting patterns during walking and the body mass index (BMI) were assessed relative to goniometric measurements of the 1stMTPJ angle in adolescents. Weight-shifting patterns were identified with a plantar pressure analysis, performed with the GaitlineMaxline Distance method. Results: As the 1stMTPJ angle widened, the frequency distributions of identified weight-shifting patterns became increasingly lopsided, due to the favoring or disfavoring of one pattern at the expense of the other. The two sexes showed opposite trends in the weight-shifting patterns that were favored/disfavored, relative to participants with a 0º 1stMTPJ angle. The clear predominance of a central-shift pattern, at the expense of a medial-shift, occurred with the largest (20º) 1stMTPJ angle among girls. Additionally, the BMI distributions associated with 1stMTPJ angle characteristics showed opposite trends between the sexes. Conclusions: Valgus alignment of 1stMTPJ among adolescents were associated with limitations in weight-shifting freedom of the foot during walking, that could be involved in maintaining balance. An 1stMTPJ angle of 20º, where distinct limitations were observed, might serve as a criterion of HV pathology.

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Modelowanie numeryczne kości stopy po operacji palucha koślawego

Bogusz M., Chojnacka-Brożek A.

Aktualne Problemy Biomechaniki

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2015

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z. 9

7--12

PL

Opracowano numeryczny model stopy po operacji palucha koślawego metodą scarf, uwzględniając 26 kości stopy, stawy i powięź podeszwową oraz podłoże betonowe. Do tego celu wykorzystano program CAD CATIA V5 oraz system ANSYS Workbench. Przeprowadzono wstępne, porównawcze analizy wytrzymałościowe metodą elementów skończonych MES dla modelu stopy zdrowej i po operacji. Uwzględniono odpowiednie stałe materiałowe, utwierdzenia i obciążenia dla schematu stania swobodnego ze złączonymi stopami.

EN

Numerical model of the foot was developed of postoperative hallux valgus by scarf method. Model consisted of geometry of 26 bones, articular connections, plantar fascia, ground support, two stabilizing screws types Barouk and it took into account the scarf operating procedure. It was used a supporting computer-aided design CATIA V5 program and ANSYS Workbench 14.5. program. The preliminary mechanical numerical FEM (Finite Element Method) analysis of a healthy foot and after surgery was performed. Scheme of load was chosen during free standing (standing on two legs).

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Metatarsalgia – pomiary nacisku stopy na podłoże

Jurkojć J., Michnik R., Jochymczyk-Woźniak K., Zagórski A., Olenkowicz M.

Aktualne Problemy Biomechaniki

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2014

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z. 8

69--74

PL

W pracy przedstawiono analizę nacisku stopy na podłoże dla 7 zdrowych osób oraz 4 osób z paluchem koślawym. Badania dynamiczne przeprowadzono przy użyciu bieżni firmy Zebris. Na podstawie raportów wygenerowanych przez oprogramowanie dokonano oceny wpływu metatarsalgii na rozkład nacisku stopy na podłoże. Uzyskane wielkości dotyczące chodu, mapy nacisku stopy na podłoże oraz wielkości opisujące trajektorię środka nacisku otrzymane dla osób z paluchem koślawym, porównano z wynikami osób zdrowych.

EN

The aim of our study was to carry out an analysis of the pressure distribution on the ground for 7 healthy persons and 4 patients with hallux valgus. Dynamic tests were performed using a treadmill Zebris. On the basis of obtained reports the assessment of the influence of Hallux Valgus disease on pressure distribution of foot on the ground was carried out. All results were compared with these obtained for healthy people.

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Wybrane problemy metrologiczne oceny morfologicznej i funkcjonalnej stopy w leczeniu palucha koślawego

Wychowański M., Nowiński K., Borucki B., Wit A., Adamczyk P., Laskowski J.

Pomiary Automatyka Kontrola

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2012

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R. 58, nr 1

48-51

PL

Paluch koślawy jest chorobą często występującą u kobiet. Wykonano RTG obu stóp w projekcji AP, bocznej i na palcach oraz MRI. Opracowano, trójwymiarowy model strukturalny szkieletu stopy. Przeanalizowano błędy wyznaczenia położeń poszczególnych znaczników. Zbadano równowagęu zdrowych osób metodą stabilograficzną. Pomiarów charakterystyk chodu dokonano na ścieżce podoskopowej. Względem młodszych kobiet przeprowadzono normowanie wyników starszych kobiet. Parametry charakteryzujące badane kobiety nie mają rozkładu normalnego. Profil chodu kobiet starszych opisano 19 parametrami. Różnice w chodzie obu badanych grup kobiet przejawiają się głównie w parametrach geometrycznych. Normy symetrii kobiet podano dla 1 kwartyla, mediany i 3 kwartyla.

EN

Hallux valgus is one of the most frequent forefoot disease in women. There was taken RTG of both feet in the AP, lateral and tip toe projection as well as MRI. A three-dimensional structural foot skeleton model was developed. There was analysed the uncertainty of landmark positioning together with the influence on foot geometric features. Balance mechanism was examined in healthy subjects using the HUR stabilographic platform. Gait characteristics were made on the pressure distribution plate produced by ZEBRIS. There were separated two groups of younger women and a group of older women. Normalization of older women was carried out in relation to the younger group. The parameters characterizing the investigated women did not have a normal distribution. The gait profile of older women is based on 19 parameters. Differences in gait performance of both groups of women are mainly manifested in the geometric parameters. The norms of the symmetry index for the women are given as 1 quartile, median and 3 quartile.