Introduction: Although the grade of fusion of the left distal radial epiphysis (LDRE) observed by magnetic resonance imaging (MRI) has been linked to chronological age (CA), its relationship to Tanner stage of the genitals in the Latin American population is unknown. Objective: To evaluate the relationship of CA and sexual maturity with skeletal maturity (SM) determined by MRI of the LDRE in adolescent football players from Medellin, Colombia. Materials and methods: Cross-sectional study that included 60 male football players with certified legal age between 12 and 18 years. Medical evaluation and MRI of the LDRE using a 1.5 T scanner was performed according to a described protocol. The image reading was performed by 3 blinded evaluators. SM was classified as: A: immature; B: developing; C: mature, and interand intra-observer variability was assessed. Results: Among the football players included in the study, the average body mass index and body fat were 19.6 ± 2.0 kg/m 2 and 11.1 ± 1.2%, respectively. A correlation of CA and the Tanner stage of genital maturity with SM (Kendall's Tau b 0.686 and 0.693, respectively; P < .001) was found. All players classified as stage C were 17 or older and Tanner stage V. The inter-observer and intraobserver agreement showed a kappa index of 0.36 (P < .001) and 0.60 (P < .001), respectively. * Corresponding author. E-mail address: jagallo2000@yahoo.com (J. Gallo).http://dx.doi.org/10.1016/j.apunts.2015.05.002 1886-6581/© 2015 Consell Català de l'Esport. Generalitat de Catalunya. Published by Elsevier España, S.L.U. All rights reserved. Document downloaded from http://www.apunts.org, day 24/12/2015. This copy is for personal use. Any transmission of this document by any media or format is strictly prohibited. Document downloaded from http://www.apunts.org, day 13/01/2016. This copy is for personal use. Any transmission of this document by any media or format is strictly prohibited.
J. Bolívar et al.
Conclusion:A relationship was found between CA and sexual maturity and SM by MRI of the LDRE in adolescent football players. Classification by stage of SM in 3 categories could be more practical and have implications for competition. © 2015 Consell Català de l'Esport. Generalitat de Catalunya. Published by Elsevier España, S.L.U. All rights reserved.
PALABRAS CLAVEDeterminación de la edad por el esqueleto; Desarrollo sexual; Adolescente; Imagen por resonancia magnética; Epífisis; Fútbol Relación de la edad cronológica y la maduración sexual con la maduración ósea por resonancia magnética nuclear de la epífisis del radio distal en futbolistas adolescentes Resumen Introducción: Aunque el grado de fusión de la epífisis del radio distal izquierdo (ERDI) por resonancia magnética nuclear (RMN) se ha relacionado con la edad cronológica (EC), se desconoce su relación con el Tanner genital en población latinoamericana. Objetivo: Evaluar la relación de la EC y la maduración sexual con la maduración ósea (MO) por RMN de la ERDI en futbolistas adolescentes de la ciudad de Medellín, Colo...