Résumé
PURPOSE@#Different arch structures may cause different foot function injuries. In the past, the arch structure and flexibility of the foot were often defined by the height of the arch, and there was no three-dimensional (3D) structure classification method. In order to form a more complete 3D description, we propose a new classification system of arch volume flexibility (AVF), and then use this new classification system to investigate the relationship between the AVF and arch index (AI), and the arch height flexibility (AHF) and AI, respectively.@*METHODS@#It is proposed to recruit 180 young male adults for the test. We obtained arch volume and AI through 3D scanning and obtained the navicular height through manual measurement. Based on these data, we calculated the AHF and the AVF. Using the quintile method, these arches are divided into very stiff, stiff, neutral, flexible, and very flexible. According to AI value, all arches were divided into cavus, rectus, and planus. The distribution of AVF was compared using χ2 goodness of fit test. The spearman correlation test was used to compare the AHF and AVF. A p < 0.05 indicates that the difference is statistically significant.@*RESULTS@#All participants' plantar data was obtained through 3D scanning, but only 159 of them were complete, so only 318 feet had valid data. The left AHF is (21.23 ± 12.91) mm/kN, and the right AHF is (21.71 ± 12.69) mm/kN. The AVF of the left foot arch is (207.35 ± 118.28) mm3/kg, while the right one is (203.00 ± 117.92) mm3/kg, and the total AVF of the arch was (205.17 ± 117.94) mm3/kg. There was no statistical difference in the AVF between the left and right feet for the same participant (n = 159, p = 0.654). In cavus, the percentage of arch with AVF is 21.4% (very stiff), 21.4% (stiff), 14.3% (neutral), 7.1% (flexible), and 35.7% (very flexible). In rectus, the percentage of arch with AVF is 23.9% (very stiff), 19.6% (stiff), 14.7% (neutral), 24.5% (flexible), and 17.2% (very flexible). In planus, the percentage of arch with AVF is 14.9% (very stiff), 20.6% (stiff), 27.0% (neutral), 16.3% (flexible), and 21.3% (very flexible). Moreover, the correlation between AHF and AVF is not significant (p = 0.060).@*CONCLUSION@#In cavus, rectus, and planus, different AVF accounts different percentage, but the difference is not statistically significant. AVF is evenly distributed in the arches of the feet at different heights. We further found the relationship between AHF and AVF is not significant. As a 3D index, AVF may be able to describe the flexibility of the arch more comprehensively than AHF.
Sujets)
Adulte , Humains , Mâle , Pied , Traumatismes du pied , Phénomènes biomécaniquesRésumé
@#Introduction: Traditionally, feet are classified as high, normal or low arched. Studies on flat foot (pes planus) have been conducted in different ethnic groups in Nigeria but none has been conducted among young Ika adults. This study is therefore aimed at determining the prevalence of flat foot using plantar arch index among young adults of Ika. Methods: A total of 384 subjects comprising 199 females and 185 males aged 18-37 years participated in the study. Foot prints of subjects were obtained using the simple ink and duplicating paper method. The Plantar Arch Index was calculated by dividing the foot prints in three equidistant regions excluding the toes. The index value was the ratio between the area of the mid foot and the total area of the foot print. Descriptive statistics for each variable included mean and standard deviation while statistical tools included independent sample t-tests and paired samples test respectively. Results: After data analyses, the total prevalence of flat foot was 8.6% while a total of 24(6.3%) males had flat foot on their right foot while 16(4.2%) had on their left. However, 14(3.6%) and 12(3.1%) females had flat foot on their right and left foot sides respectively. The prevalence of Pes planus was significantly higher among males (P< 0.05) than their female counterparts on both foot sides. Furthermore, there was a statistically significant difference between flat and normal foot on both foot sides while the difference between flat foot of the right side and that of the left was not statistically significant. Conclusion: Being the first of its kind in Ika, this study is therefore important to the Orthopaedist and Podiatrist in Nigeria for diagnosis and treatment choices of foot deformities amongst young adults of Ika.
Résumé
Aim: To compare footprints of basketball players with those of non-playing individuals. Background: The human foot and ankle are the last segments and their joint, the last within the complex kinetic chain of the lower limb as a whole. The foot is one of the most important interaction parts of the body with the ground, especially in the upright posture. During growth, the foot changes not only its dimensions but also its shape. The lower leg, ankle and foot are the most commonly affected region causing pain and disability in athlete, especially in track & field. A high impact sport like Basketball with the high involvement of foot in the game may cause the anatomy of the foot to change. This may also lead to change in the arch of the foot and predispose it to the injury. Methodology: 50 basketball players and 50 non playing healthy individuals were selected as per inclusion criteria. Demographic data like age, gender, height, weight, BMI and any injury in last 6 months were recorded for all study participants. For obtaining foot prints, ink was applied to the feet of the subjects. The subjects were then asked to step on graph paper in standing position, leaving a clear impression of foot’s plantar surface on the paper. The various distances in cms were taken using a transparent ruler. The flat index and arch index was also calculated. Result: Statistical analysis of the above graph showed significant difference in A, C, D,G between basketball and non-playing individuals. The other values (B, E, F,C/E) were not found to be statistically different. Conclusion: The distance A (from 1st toe to heel),distance D(metatarsal distance),distance C(length of the longitudinal arch contour) and distance G(narrowest distance of the foot) are increased in basketball players as compared to non playing individuals. Also the Arch index is more in basketball players which indicated a relatively flatter feet in basketball players as compared to non players. This indicates a flatter feet in basketball players as compared to non playing individuals.
Résumé
Introduction: The arches of the feet are important in protecting the internal structures of the body from impactforces while it mainly helps in transferring the internal forces to the ground and are also involved in lifting thebody weight and mainly shock absorption With respect to the medial longitudinal arch some prominent deformitiescan be observed - high arch i.e., Cavus foot and low arch i.e., flat foot also known as Pes planus. The deformitiesare responsible for inefficient transmission of forces leading to foot diseases.Objectives: The present study is an attempt to know the effect of body mass index on plantar arches. This is usefulin creating awareness about the plantar arch deformities and the cause for the deformity. The parameters usedin measuring the plantar arch height are Staheli’s plantar arch index and arch angle.Methodology: Over the course of two months study was conducted on 106 subjects within the age group of 18-22years. Body Mass Index of the subjects are calculated using height and weight of the subject. Plantar archindex and arch angle were classified underOne wayANOVA test and chi square test. Measurement of the plantararch index is done by using Staheli’s arch index and arch angle will be done by using foot print method.Conclusion: In this study it is shown that BMI is significantly associated with Arch index and Arch angle. Archindex is significantly higher in obese and overweight subjects than underweight and normal subjects. Arch angleis significantly higher in underweight and normal subjects than obese and overweight subjects. In the presentstudy by comparing overweight and obese subjects with underweight and normal subjects, the obese andoverweight subjects are more prone to have flatfoot.
Résumé
Pes planus and pes cavus are the two common foot conditions, which fascinate the attention of researchers. Adeviation from normal foot arch structure is associated with unstable gait. This study aims at assessing thestaheli arch index (SAI) of Jharkhand tribal children. This study was carried out on children belonging to varioustribal groups of Ranchi and Angara districts of Jharkhand. Graphical footprints of the study subjects wererecorded and assessed using SPSS-16. The mean right SAI was 0.63 and 0.61 for right and left foot respectively.The mean right SAI was significantly greater than that of left foot. Gender differences in mean SAI was statisticallyinsignificant at p<0.05. The mean SAI of 0.75 and 0.76 at the age of 3:<4 years was reduced to 0.64 and 0.61 by14:<15 years age for right and left foot respectively. There was insignificant correlation of SAI with age and bodymass index (p < 0.05).
Résumé
El arco plantar longitudinal medial del pie (APLM) es el componente más importante en estática y dinámica de la bóveda plantar. Su altura define pies normales, planos y cavos, estos últimos son factores predisponentes de lesiones. El objetivo de este estudio fue describir y relacionar en una población de estudiantes universitarios chilenos la prevalencia de pies normales, cavos y planos según índice de masa corporal (IMC), sexo y actividad física (AF) semanal y la distribución de asimetrías entre pies. Se estudió a 209 sujetos (128 hombres y 81 mujeres), estudiantes universitarios, cuya edad, estatura, peso e IMC fue de 20,4 años (±3,4); 1,68 m (±0,09); 67,6 Kg (±12,4) y 23,77 (±3,0) respectivamente. Por medio de cuestionario se determinó los hábitos de AF de la muestra. La impresión plantar se obtuvo mediante fotopodoscopía, la cual fue evaluada empleando el Arch Index (AI) de Cavanagh y Rodgers. Los hombres presentan mayor prevalencia de pie plano (31,3 % contra 11,1 %). Hay correlación positiva estadísticamente significativa entre AI e IMC en ambos sexos. Se obtuvo mayor correlación entre AI izquierdo y AF en hombres y mujeres con significancia estadística. El 31,25 % de los hombres y el 37,04 % de las mujeres presentaron asimetrías en APLM. Hombres con IMC normal tienen 64,20 % de pies asimétricos. Las mujeres que practican entre 6 y 10 horas de AF a la semana presentan 50,98 % de pies asimétricos. El IMC se relaciona con una disminución de la altura del APLM, se sugiere el control de esta variable en sujetos con diagnóstico de pie plano flexible y pie plano valgo. La práctica de AF se relaciona con aumento de la altura del APLM en hombres y mujeres y se sabe que también contribuye a disminuir el IMC, actuando en concordancia hacia estas dos variables.
The (MPLA) is the most important component in statics and dynamics of the vault plant. Its height defines normal, flat and cavus feet, which are predisposing factors for injuries. The objective of this research was to describe and relate in a population of Chilean university students the prevalence of normal, cavus and flat feet according to body-mass index (BMI), sex, and weekly physical activity (PA) and the distribution of asymmetries between feet. 209 subject were studied (128 men and 81 women), university students, whose age, height, weight and BMI was of 20.4 years (±3.4); 1,68 m (±0.09); 67.6 kg (±12.4) and 23.77 (±3.0) respectively. The PAs habits of the sample were determined by means of questionnaire. The footprint is obtained by photo-podoscopy, which was evaluated by the Arch Index (AI) of Cavanagh and Rodgers. Men have higher prevalence of flat foot (31.3 % against 11.1 %). There are both statistically significant positive correlations between AI and BMI in both sexes. Greater correlation between left AI and PA in both men and women was obtained with statistical significance. The 31.25 % of men and 37.04 % of women presented asymmetries in MPLA. Men with normal BMI have 64.20 % of asymmetric feet. Women that practice between 6 and 10 hours of PA a week presented 50.98 % of asymmetric feet. The BMI is related to a decrease of the height of MPLA, suggesting the control of this variable in subjects with flexible flat foot and valgus flat foot diagnosis. The practice of PA is related to the height of the MPLA increased in men and women and it is known that it also helps to reduce BMI, acting in accordance to these two variables.
Sujets)
Humains , Mâle , Femelle , Adulte , Pied plat/épidémiologie , Pied/anatomie et histologie , Pied creux/épidémiologie , Indice de masse corporelle , Chili/épidémiologie , Exercice physique , Prévalence , Facteurs de risque , Répartition par sexeRésumé
Background: A flexible flatfoot is considered to be a variation of a normal foot. Any deviation from the anatomical plantigrade foot is a deformed foot. Some of the deformities of the foot are: Flat Foot. The normal concavity due to the medial longitudinal arch is absent. High Arch Foot - A normal foot has a medial longitudinal arch which is higher. Materials and Methods: A total population of 625, in age ranging from 5 year to 9 years in Kanchipuram district was chosen. Each individual was made to sit and the foot was brought in contact with the Foot Impression gaining Kit on white sheets in standing posture. Results: The flat feet and high arch feet evaluation was obtained by means of foot prints and the plantar arch index was established. The mean values of plantar arch index within the age group were stable and ranges from 0.72 to 0.73. With plantar arch indices greater than 1.15 was regarded as flatfeet and less than 0.10 was regarded as High arch feet. Discussion: In normal feet with presence of an arch, the stress will be distributed in an even manner so that the person will not experience any kind of pain. Under an abnormal condition that occurs due to lack of stretching of muscles, bones and tendons, there will be absence of arch among these people. In this condition, all the weight will be concentrated in smaller area on the feet and generates a lot more pain than normal. This condition might occur in both children and adults. In some people both feet will be flat and in some only one foot will be flat. Conclusion: Flat foot is highly prevalent in the ages between 5-9. The average values for plantar arch indices are stable and ranges from 0.72 to 0.73 in our sample regarded as Normal foot. Plantar arch index > 1.15 is regarded as Flat foot. Plantar arch index < 0.10 is regarded as High arch foot.
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Background: Ageing feet may lead to painful deformity and disability. There are different patterns of degenerative changes among each population. Objectives: To determine the prevalence, characteristics, and related factors of ageing foot disorders in healthy Thai older persons. Methods: A cross-section analytic study was done at the Faculty of Medicine, Chulalongkorn University, during September 2006 – August 2007. Healthy volunteers aged between 60-80 years old were recruited from urban areas of Bangkok. Medical status, musculoskeletal foot problems, plantar arch, and footwear used were assessed. Footprints were taken from standing, weight bearing position, and calculated for Staheli arch index. Factors for the foot disorders were analyzed. Results: There were 108 men and 105 women with a mean age = 68.7±5.4 years, mean body mass index (BMI) = 24.6±3.4 kg/m². Foot deformities were 87% (hallux valgus 45.5%, mallet toe 45%, hammer toe 25%, and claw toe 21.5%). Hallux valgus was more severe in women, having arch index value increasing with the severity. No other demographic or biomechanical variables including footwear types were found associated with foot deformities. More than 85% of the subjects had foot callus related to deformities and tight shoes. Thirty subjects (14%) had foot pain (1/5 of women, 1/20 of men). The pain resulted from plantar fasciitis, hallux valgus, callus, metatarsalgia, and improper footwear. Subjects with plantar fasciitis had higher BMI and higher arch index. Pes planus were more common in women (42% vs. 32%). Only 9% had pes cavus, all of when were men. The Staheli arch index showed good reliability in discriminating the plantar arch types. Conclusions: Ageing feet caused problems, mostly in women. Hallux valgus related to pes planus. Plantar fasciitis associated with overweight and pes planus.