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1.
Actual. osteol ; 16(1): 26-34, Ene - abr. 2020. ilus, graf
Article in Spanish | LILACS | ID: biblio-1130074

ABSTRACT

La expansión modeladora de la geometría cortical de un hueso inducida por su entorno mecánico podría ser difícil de modificar por estímulos ulteriores con diferente direccionalidad. Este estudio, que por primera vez combina datos tomográficos del peroné (pQCT) y dinamométricos de la musculatura peronea lateral, intenta demostrar que, en individuos jóvenes no entrenados, el entrenamiento en fútbol produce cambios geométricos peroneos expansivos, similares a los del rugby, que podrían interferir en los efectos de un entrenamiento ulterior direccionalmente diferente (carrera larga). Confirmando la hipótesis, los resultados indican, con evidencias originales, 1) la relevancia creciente del uso del pie (rotación externa y eversión provocadas por los peroneos laterales) para la determinación de la geometría peronea (incremento del desarrollo de los indicadores de masa y de diseño óseos), evidenciada por la secuencia creciente de efectos: carrera < fútbol < rugby; 2) la predominancia de esos efectos sobre el desarrollo centro-proximal del peroné para resistir a la flexión lateral, y en la región distal para resistir el buckling (principal sitio y causa de fractura del hueso) y 3.) la relevancia de la anticipación de esos efectos para interferir en la manifestación de los cambios producidos por un entrenamiento ulterior (carrera), cuando los del primero (fútbol) afectan la modelación cortical de modo expansivo. Esta última deducción demuestra, en forma inédita, que un cambio modelatorio expansivo tempranamente inducido sobre la estructura cortical ósea 'delimitaría el terreno'para la manifestación de cualquier otro efecto ulterior por estímulos de distinta direccionalidad. (AU)


The modeling-dependent, geometrical expansion of cortical bone induced by the mechanical environment could be hard to modify by subsequent stimulations with a different directionality. The current study aimed to demonstrate that in young, untrained individuals, training in soccer or rugby enhances the geometric properties of the fibula cortical shell in such a way that the geometrical changes could interfere on the effects of a second training in which the loads are induced in a different direction, e.g. long-distance running. The original findings reported herein confirm our hypothesis and support 1) The relevance of the use of the foot (external rotation and eversion produced by peroneus muscles) to determine fibula geometry (improved development of indicators of bone mass and design) as evidenced by the increasing nature of the effects induced by running < soccer < rugby trainings; 2) The predominance of those effects on the ability of the fibula to resist lateral bending in the centralproximal region (insertion of peroneus muscles), and to resist buckling in the distal region (the main cause and site of the most frequent bone fractures), and 3) The interaction of the effects of a previous training with those of a subsequent training with a different orientation of the loads when the former induced a modeling-dependent expansion of the cortex. Our results support the proposed hypothesis with original arguments by showing that a first, expansive effect induced on cortical bone modeling would set the stage the manifestation of any subsequent effect derived from mechanical stimuli. (AU)


Subject(s)
Humans , Male , Adolescent , Adult , Young Adult , Exercise/physiology , Fibula/growth & development , Running/physiology , Soccer/physiology , Sports/physiology , Tomography , Bone Density , Fractures, Bone/prevention & control , Muscle Strength/physiology , Muscle Strength Dynamometer , Fibula/diagnostic imaging , Cortical Bone/diagnostic imaging , Foot/growth & development , Foot/physiology , Foot/diagnostic imaging , Football/physiology
2.
Acad. anat. int ; 3(1): 26-30, 2017. ilus
Article in English | AIM | ID: biblio-1256020

ABSTRACT

Background: Stature is a significant anthropometric determinant of the physical identity of an individual. Aim: This study was carried out to estimate stature of Nigerian Annang indigenes of Akwa Ibom State from hand and foot dimensions. Methods: Two hundred (200) adults Annang indigenes (100male and female each) were randomly selected for this study. Hand and foot dimensions were obtained by direct linear measurements using a 150mm digital vernier caliper (with accuracy of 0.01mm); while stature was determined by stadiometric measurement of the height (to the nearest 0.1m). Measurements obtained include; second (2D), fourth digit (4D) and right foot length (RFL). All measurement were converted to centimeters (cm). SPSS (IBM® version 20, Armonk, New York, USA) t-test was to evaluate gender difference in the measured dimensions; while Pearson's correlation and Generalized Linear Modeling were used to derive Regression equation for estimation of stature from the measured dimensions. The significance level was set at 95% as P≤0.05 was considered significant. Results: The t-test showed that males displayed significantly higher mean values than the females for all measured parameters (P<0.001). Single regression sex specific regression formulae were derived and the result showed that better prediction (r) values were obtained for females F (2D=0.428, 4D=0.430, RFL=0.587; P<0.01) population when compared to males M (2D=0.319, 4D=0.231, RFL=0.456 P<0.05). Conclusion: This study suggests the existence of sexual difference in hand and foot dimension and also the possibility of accurately estimating stature from the right foot length, right second and fourth digit


Subject(s)
Body Height , Foot/growth & development , Hand/growth & development , Nigeria
3.
Arch. endocrinol. metab. (Online) ; 59(5): 414-421, Oct. 2015. tab, graf
Article in English | LILACS | ID: lil-764114

ABSTRACT

Objectives To describe population reference values for shoes size, and to identify possible disproportional foot growth during GH therapy.Materials and methods Construction of percentile chart based on 3,651 controls (male: 1,838; female: 1,813). The GH treated group included 13 children with idiopathic short stature (ISS) and 50 children with normal height, but with height prediction below their target height; male: 26 and female: 37 mean ± SD age 13.3 ± 1.9 and 12.9 ± 1.5 years, respectively. GH (0.05 mg/kg/day) was used for 3.2 ± 1.6 years, ranging from 1.0-10.3 years. Height expressed as SDS, target height (TH) SDS, self-reported shoes size and target shoes size (TSS) SDS were recorded.Results Reference values were established showed as a foot SDS calculator available online at www.clinicalcaselearning.com/v2. Definitive shoes size was attained in controls at mean age of 13y in girls and 14y in boys (average values 37 and 40, respectively). In the study group, shoes size was -0.15 ± 0.9 and -0.02 ± 1.3 SDS, with target feet of 0.08 ± 0.8 and -0.27 ± 0.7 SDS in males and females, respectively. There was a significant positive correlation between shoes size and familial TSS, between shoes size and height and between TSS and TH. There was no correlation between duration of GH treatment and shoes size. Our data suggest that during long-term treatment with GH, patients maintain proportional growth in shoes size and height, and the expected correlation with the familial target.Conclusions We conclude that there is no excessive increase in the size of foot as estimated by the size of shoes in individuals under long term GH therapy.


Subject(s)
Adolescent , Adult , Child , Child, Preschool , Female , Humans , Male , Young Adult , Foot/growth & development , Growth Disorders/drug therapy , Human Growth Hormone/therapeutic use , Shoes/statistics & numerical data , Body Height/drug effects , Cross-Sectional Studies , Foot/anatomy & histology , Human Growth Hormone/pharmacology , Organ Size/drug effects , Reference Values
5.
An. venez. nutr ; 10(1): 5-13, 1997. tab
Article in Spanish | LILACS | ID: lil-213297

ABSTRACT

Para la actualización de la antropometria neonatal en Venezuela se estudió una muestra constituida por 3.165 niños (varones: 1.622; niñas: 1.543) de 36 a 42 semanas de EG, nacidos entre marzo 1993 y agosto de 1994 en el Departamento de Gineco-Obstetricia del Hospital "Dr. Domingo Luciani" (IVSS). Los valores de media para peso, talla, talla vertex isquion y circunferencia cefálica en niñas: 2.995 ñ417 g, 48.7 ñ1.9 cm, 31.5 ñ 1.5 cm y 33.4 ñ 1.2 cm fueron inferiores, a los del sexo masculino: 3.120 ñ 450 g, 49.6 ñ 2.1 cm, 31.8 ñ 1.6 cm, 34.1 ñ 1.4 cm. Las circunferencias media del brazo. tanto derecho como izquierdo, para ambos sexos, registraron el mismo valor 10.1 ñ 0.8 cm. Las correlaciones entre las variables resultaron estadísticamente significativas (p<0.0001) en ambos sexos; la más alta CBD: CBI (r=0.9736 femenino y r=0.9771 masculino); peso-CBI (r=0.8570 femenino y r=0.8310 masculino). Aunque estos resultados deberán ser validados , su aplicación contribución a un diagnóstico más efectivo del estado nutricional en RN


Subject(s)
Humans , Male , Female , Infant, Newborn , Anthropometry , Arm/growth & development , Birth Weight/physiology , Child Development/classification , Foot/growth & development , Gestational Age , Nutritional Status/physiology
6.
Centro méd ; 41(2): 42-6, nov. 1996. ilus, mapas, graf
Article in Spanish | LILACS | ID: lil-259327

ABSTRACT

El estudio y el conocimiento de la morfología del pie de los idígenas y del indígena venezolano en particular es muy limitado lo que nos ha llevado a realizar durante octubre de 1995 el presente estudio con las etnias E'ñepa (Panare), Wóthuha (Piarao), E hiwi(Guahibo), con el fin de recabar datos al respecto. En el presente se encontro que la morfología del pie de las etnias indígenas E'ñepa (Panare) y Wóthuha (Piaroa), es un pie cuadrado, normal, ancho, pequeño de forma triangular de base anterior y vértice posterior, con un aumento del 1er espacio interdigital con gran desarrollo muscular con una fórmula metatarsal de index plus minus y en los E'ñepa (Panare) una incidencia de pie cavo del 32.75 por ciento. En los Hiwi (Guahibo) el pie es normal, con igual incidencia entre el pie cuadrado y griego, ancho de forma triangular de base anterior y vértice posterior con gran desarrollo muscular. Se aprecia en el, presente estudio una incidencia de pie plano entre los Wóthuha (Piaroa) del 13.39 por ciento y en los Hiwi (Guahibo) de un 9.09 por ciento, ambos utilizan calzado regularmente entre los E'ñepa (Panare) quienes no utilizan calzado presentan un 1,72 por ciento de pie plano


Subject(s)
Humans , Male , Female , Child, Preschool , Adolescent , Adult , Flatfoot/complications , Flatfoot/diagnosis , Foot Deformities/ethnology , Foot Deformities/etiology , Foot/anatomy & histology , Foot/growth & development , Foot/surgery
7.
Rev. bras. ortop ; 31(3): 261-4, mar. 1996. ilus, graf
Article in Portuguese | LILACS | ID: lil-212503

ABSTRACT

O conhecimento da forma do tálus é importante para a compreensao de grande parte das deformidades do pé em crescimento, que implicam desvios no plano transversal, tais como o pé torto congênito e pés metatarsos varos. Foi nosso objetivo analisar o ângulo de declinaçao nos tálus de crianças com pés normais para determinar seus valores normais e correlacionar esse ângulo ao comprimento do pé. Para isso, foram dissecados 94 (47 pares) pés de crianças. O tálus foi submetido diretamente a processo de digitalizaçao em scanner, obtendo-se imagem bidimensional do plano transverso em vista superior. Após análise dessas imagens em computador, foram determinados os ângulos de declinaçao medial e lateral, além da medida do maior comprimento dos pés. Através dessas medidas, observamos que, conforme o pé aumento em comprimento, há decréscimo do ângulo de declinaçao do tálus medido entre o segmento de reta que tangencia a margem lateral do tróclea e o que tangencia lateralmente o colo desse osso.


Subject(s)
Humans , Child , Foot/growth & development , Talus/anatomy & histology , Cadaver
8.
Rev. bras. ortop ; 28(4): 219-23, abr. 1993. ilus, graf
Article in Portuguese | LILACS | ID: lil-197117

ABSTRACT

Foram obtidas impressöes plantares de 637 indivíduos hígidos, de ambos os sexos, na faixa etária de 0-15 anos. Mediu-se o comprimento da impressäo e o arco plantar pela relaçäo percentual da menor largura do arco e largura do pé. O pé cresce mais rapidamente até os dois anos de idade e, depois, de maneira uniforme até os 12 anos, na mulher. No homem, há um surto de crescimento dos 12 aos 15 anos. O arco plantar é quase inexistente até os dois anos de idade, após o que desenvolve-se rapidamente até os seis anos, aumentando pouco após esta idade e estabilizando-se após os 12 anos.


Subject(s)
Humans , Male , Female , Infant, Newborn , Infant , Child, Preschool , Child , Adolescent , Dermatoglyphics , Foot/growth & development
12.
Radiol. bras ; 23(4): 227-30, out.-dez. 1990. tab
Article in Portuguese | LILACS | ID: lil-97276

ABSTRACT

Estudo do crescimento do comprimento dos pés direito e esquerdo em 58 fetos humanos (35 do sexo masculino) estadiados no segundo e terceiro trimestres de gestaçäo. Esta medida foi correlacionada à idade gestacional, ao peso do feto, e aos comprimentos vértice- coccígeo e vértice-podálico. O modelo utilizado foi a equaçäo alométrica Y=aXb. As correlaçöes com outros parâmetros foram altas e estaticamente significativas (p < 0,01). Realizou-se também uma análise multivariada por componentes principais (CP) através de uma matriz de covariância dos dados transformados em logaritmos. A análise dos CP evidenciou que as diferenças de comprimentos entre pés direitos e esquerdos säo desprezíveis, e que estes, em conjunto, apresentam crescimento com maiores autovetores que os demais parâmetros fetais. Sendo o comprimento do pé uma medida que pode ser avaliada pelo exame ultra-sonográfico, os resultados atuais indicam que tal parâmetro poderia ser indicador seguro da idade gestacional em brasileiros


Subject(s)
Humans , Male , Child , Fetus , Gestational Age , Foot/growth & development , Ultrasonics , Brazil , Multivariate Analysis
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