Relationship of chronological age and sexual maturity with skeletal maturity by magnetic resonance imaging of the distal radial epiphysis in adolescent football players

Abstract

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...

Magnetic resonance imaging for forensic age estimation in living children and young adults: a systematic review

“…However, different studies on clavicular development indicated that staging was less reproducible than at other anatomical sites [35,48,83]. Furthermore, for all anatomical sites except the ankle, at least one study reported considerably lower values than 0.80 [19,35,40,41,48,61,79]. No relation between those lower values and MR-sequence or staging technique seemed apparent.…”

“…Statistics were extracted from boxplots for the following references: [2,69,70,79]. Moreover, the following authors provided additional data: Markus Auf der Mauer [43,46], Jannick De Tobel [42,[47][48][49], Astrid Junge [44], and Martin Urschler [19,45].…”

“…By contrast, differences between ethnic groups have been demonstrated too [91,92]. Presumably, trends in those studies also apply to MRI, but ethnic differences have only been studied for hand/wrist MRI [2,44,72,79]. Moreover, these studies were only conducted in football players, who might be more advanced in their development than a general population of the same age [93][94][95][96].…”

Futsal improve body composition and cardiorespiratory fitness in overweight and obese children. A pilot study

“…However, another study showed that young Italian male soccer players presented a high inter-individual variability of pubertal stage within the same class of chronological age 20 . This can explain in part by the variability of the physical parameters (TBF, BF%, LBM) in this population 22 . Although exercise training could improve the lipid profile, not difference was found in present study.…”

Biological Maturity Status in Elite Youth Soccer Players: A Comparison of Pragmatic Diagnostics With Magnetic Resonance Imaging

“…In fact, in competitive sports in many European countries, there is currently no legal basis for using X-ray examinations to estimate the ages of healthy youth players (Timme et al, 2017). In this context, several studies mention that, in addition to the X-ray method as the gold standard, an image of the handwrist can also be reliably produced by radiation-free magnetic resonance imaging (Dvorak et al, 2007;Dvorak, 2009;George et al, 2012;Bolívar et al, 2015;Urschler et al, 2016;MRI). Going further, there is also evidence that MRI that does not use ionizing radiation is fundamentally more accurate than X-rays due to its high contrast resolution (Serinelli et al, 2015).…”