Skeletal and chronological ages in American adolescents: current findings in skeletal maturation

Purpose This study was designed to assess the relationship between skeletal and chronological ages among current American adolescents using the Greulich and Pyle atlas for skeletal age determination. Materials and methods We used the Greulich and Pyle atlas to prospectively determine skeletal age in...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Calfee, Ryan P. [verfasserIn] Sutter, Melanie Steffen, Jennifer A. Goldfarb, Charles A.

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2010

Schlagwörter:	Greulich and Pyle atlas Skeletal Chronological Age Bone

Anmerkung:	© EPOS 2010

Übergeordnetes Werk:	Enthalten in: Journal of children's orthopaedics - London : Sage, 2007, 4(2010), 5 vom: 02. Sept., Seite 467-470
Übergeordnetes Werk:	volume:4 ; year:2010 ; number:5 ; day:02 ; month:09 ; pages:467-470

Links:	Volltext

DOI / URN:	10.1007/s11832-010-0289-z

Katalog-ID:	SPR022617760

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520			\|a Purpose This study was designed to assess the relationship between skeletal and chronological ages among current American adolescents using the Greulich and Pyle atlas for skeletal age determination. Materials and methods We used the Greulich and Pyle atlas to prospectively determine skeletal age in a group of 138 otherwise healthy American adolescents from 12 to 18 years of age. 62 males and 76 females were enrolled in this cohort. Paired Studentt-tests were used to statistically compare the skeletal and chronological ages in this population. Subgroup analysis examined the effect of gender on differences between chronologic age and skeletal age. Results For the entire cohort, mean skeletal age was significantly greater than chronological age (mean 0.80 years, P < 0.01). In 29 cases (21%) the skeletal age was at least 2 years greater than the chronologic age. Among females, such cases with marked discrepancy occurred exclusively in those chronologically between 12 and 15 years of age (P < 0.01). Males demonstrated a 2-year or greater discrepancy more commonly than females (26 vs. 17%). In males, 2-year discrepancies were equally likely across chronologic ages (P = 0.82). Conclusions Current American adolescents are significantly more mature by skeletal age, as determined by the Greulich and Pyle method, than their chronological age would suggest. The skeletal ages of females are most likely to markedly exceed chronologic age between the ages of 12–15 years.
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allfields	10.1007/s11832-010-0289-z doi (DE-627)SPR022617760 (SPR)s11832-010-0289-z-e DE-627 ger DE-627 rakwb eng Calfee, Ryan P. verfasserin aut Skeletal and chronological ages in American adolescents: current findings in skeletal maturation 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © EPOS 2010 Purpose This study was designed to assess the relationship between skeletal and chronological ages among current American adolescents using the Greulich and Pyle atlas for skeletal age determination. Materials and methods We used the Greulich and Pyle atlas to prospectively determine skeletal age in a group of 138 otherwise healthy American adolescents from 12 to 18 years of age. 62 males and 76 females were enrolled in this cohort. Paired Studentt-tests were used to statistically compare the skeletal and chronological ages in this population. Subgroup analysis examined the effect of gender on differences between chronologic age and skeletal age. Results For the entire cohort, mean skeletal age was significantly greater than chronological age (mean 0.80 years, P < 0.01). In 29 cases (21%) the skeletal age was at least 2 years greater than the chronologic age. Among females, such cases with marked discrepancy occurred exclusively in those chronologically between 12 and 15 years of age (P < 0.01). Males demonstrated a 2-year or greater discrepancy more commonly than females (26 vs. 17%). In males, 2-year discrepancies were equally likely across chronologic ages (P = 0.82). Conclusions Current American adolescents are significantly more mature by skeletal age, as determined by the Greulich and Pyle method, than their chronological age would suggest. The skeletal ages of females are most likely to markedly exceed chronologic age between the ages of 12–15 years. Greulich and Pyle atlas (dpeaa)DE-He213 Skeletal (dpeaa)DE-He213 Chronological (dpeaa)DE-He213 Age (dpeaa)DE-He213 Bone (dpeaa)DE-He213 Sutter, Melanie aut Steffen, Jennifer A. aut Goldfarb, Charles A. aut Enthalten in Journal of children's orthopaedics London : Sage, 2007 4(2010), 5 vom: 02. Sept., Seite 467-470 (DE-627)523858221 (DE-600)2268264-8 1863-2548 nnns volume:4 year:2010 number:5 day:02 month:09 pages:467-470 https://dx.doi.org/10.1007/s11832-010-0289-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2006 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2057 GBV_ILN_2190 GBV_ILN_2707 GBV_ILN_2890 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 4 2010 5 02 09 467-470
spelling	10.1007/s11832-010-0289-z doi (DE-627)SPR022617760 (SPR)s11832-010-0289-z-e DE-627 ger DE-627 rakwb eng Calfee, Ryan P. verfasserin aut Skeletal and chronological ages in American adolescents: current findings in skeletal maturation 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © EPOS 2010 Purpose This study was designed to assess the relationship between skeletal and chronological ages among current American adolescents using the Greulich and Pyle atlas for skeletal age determination. Materials and methods We used the Greulich and Pyle atlas to prospectively determine skeletal age in a group of 138 otherwise healthy American adolescents from 12 to 18 years of age. 62 males and 76 females were enrolled in this cohort. Paired Studentt-tests were used to statistically compare the skeletal and chronological ages in this population. Subgroup analysis examined the effect of gender on differences between chronologic age and skeletal age. Results For the entire cohort, mean skeletal age was significantly greater than chronological age (mean 0.80 years, P < 0.01). In 29 cases (21%) the skeletal age was at least 2 years greater than the chronologic age. Among females, such cases with marked discrepancy occurred exclusively in those chronologically between 12 and 15 years of age (P < 0.01). Males demonstrated a 2-year or greater discrepancy more commonly than females (26 vs. 17%). In males, 2-year discrepancies were equally likely across chronologic ages (P = 0.82). Conclusions Current American adolescents are significantly more mature by skeletal age, as determined by the Greulich and Pyle method, than their chronological age would suggest. The skeletal ages of females are most likely to markedly exceed chronologic age between the ages of 12–15 years. Greulich and Pyle atlas (dpeaa)DE-He213 Skeletal (dpeaa)DE-He213 Chronological (dpeaa)DE-He213 Age (dpeaa)DE-He213 Bone (dpeaa)DE-He213 Sutter, Melanie aut Steffen, Jennifer A. aut Goldfarb, Charles A. aut Enthalten in Journal of children's orthopaedics London : Sage, 2007 4(2010), 5 vom: 02. Sept., Seite 467-470 (DE-627)523858221 (DE-600)2268264-8 1863-2548 nnns volume:4 year:2010 number:5 day:02 month:09 pages:467-470 https://dx.doi.org/10.1007/s11832-010-0289-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2006 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2057 GBV_ILN_2190 GBV_ILN_2707 GBV_ILN_2890 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 4 2010 5 02 09 467-470
allfields_unstemmed	10.1007/s11832-010-0289-z doi (DE-627)SPR022617760 (SPR)s11832-010-0289-z-e DE-627 ger DE-627 rakwb eng Calfee, Ryan P. verfasserin aut Skeletal and chronological ages in American adolescents: current findings in skeletal maturation 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © EPOS 2010 Purpose This study was designed to assess the relationship between skeletal and chronological ages among current American adolescents using the Greulich and Pyle atlas for skeletal age determination. Materials and methods We used the Greulich and Pyle atlas to prospectively determine skeletal age in a group of 138 otherwise healthy American adolescents from 12 to 18 years of age. 62 males and 76 females were enrolled in this cohort. Paired Studentt-tests were used to statistically compare the skeletal and chronological ages in this population. Subgroup analysis examined the effect of gender on differences between chronologic age and skeletal age. Results For the entire cohort, mean skeletal age was significantly greater than chronological age (mean 0.80 years, P < 0.01). In 29 cases (21%) the skeletal age was at least 2 years greater than the chronologic age. Among females, such cases with marked discrepancy occurred exclusively in those chronologically between 12 and 15 years of age (P < 0.01). Males demonstrated a 2-year or greater discrepancy more commonly than females (26 vs. 17%). In males, 2-year discrepancies were equally likely across chronologic ages (P = 0.82). Conclusions Current American adolescents are significantly more mature by skeletal age, as determined by the Greulich and Pyle method, than their chronological age would suggest. The skeletal ages of females are most likely to markedly exceed chronologic age between the ages of 12–15 years. Greulich and Pyle atlas (dpeaa)DE-He213 Skeletal (dpeaa)DE-He213 Chronological (dpeaa)DE-He213 Age (dpeaa)DE-He213 Bone (dpeaa)DE-He213 Sutter, Melanie aut Steffen, Jennifer A. aut Goldfarb, Charles A. aut Enthalten in Journal of children's orthopaedics London : Sage, 2007 4(2010), 5 vom: 02. Sept., Seite 467-470 (DE-627)523858221 (DE-600)2268264-8 1863-2548 nnns volume:4 year:2010 number:5 day:02 month:09 pages:467-470 https://dx.doi.org/10.1007/s11832-010-0289-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2006 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2057 GBV_ILN_2190 GBV_ILN_2707 GBV_ILN_2890 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 4 2010 5 02 09 467-470
allfieldsGer	10.1007/s11832-010-0289-z doi (DE-627)SPR022617760 (SPR)s11832-010-0289-z-e DE-627 ger DE-627 rakwb eng Calfee, Ryan P. verfasserin aut Skeletal and chronological ages in American adolescents: current findings in skeletal maturation 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © EPOS 2010 Purpose This study was designed to assess the relationship between skeletal and chronological ages among current American adolescents using the Greulich and Pyle atlas for skeletal age determination. Materials and methods We used the Greulich and Pyle atlas to prospectively determine skeletal age in a group of 138 otherwise healthy American adolescents from 12 to 18 years of age. 62 males and 76 females were enrolled in this cohort. Paired Studentt-tests were used to statistically compare the skeletal and chronological ages in this population. Subgroup analysis examined the effect of gender on differences between chronologic age and skeletal age. Results For the entire cohort, mean skeletal age was significantly greater than chronological age (mean 0.80 years, P < 0.01). In 29 cases (21%) the skeletal age was at least 2 years greater than the chronologic age. Among females, such cases with marked discrepancy occurred exclusively in those chronologically between 12 and 15 years of age (P < 0.01). Males demonstrated a 2-year or greater discrepancy more commonly than females (26 vs. 17%). In males, 2-year discrepancies were equally likely across chronologic ages (P = 0.82). Conclusions Current American adolescents are significantly more mature by skeletal age, as determined by the Greulich and Pyle method, than their chronological age would suggest. The skeletal ages of females are most likely to markedly exceed chronologic age between the ages of 12–15 years. Greulich and Pyle atlas (dpeaa)DE-He213 Skeletal (dpeaa)DE-He213 Chronological (dpeaa)DE-He213 Age (dpeaa)DE-He213 Bone (dpeaa)DE-He213 Sutter, Melanie aut Steffen, Jennifer A. aut Goldfarb, Charles A. aut Enthalten in Journal of children's orthopaedics London : Sage, 2007 4(2010), 5 vom: 02. Sept., Seite 467-470 (DE-627)523858221 (DE-600)2268264-8 1863-2548 nnns volume:4 year:2010 number:5 day:02 month:09 pages:467-470 https://dx.doi.org/10.1007/s11832-010-0289-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2006 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2057 GBV_ILN_2190 GBV_ILN_2707 GBV_ILN_2890 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 4 2010 5 02 09 467-470
allfieldsSound	10.1007/s11832-010-0289-z doi (DE-627)SPR022617760 (SPR)s11832-010-0289-z-e DE-627 ger DE-627 rakwb eng Calfee, Ryan P. verfasserin aut Skeletal and chronological ages in American adolescents: current findings in skeletal maturation 2010 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © EPOS 2010 Purpose This study was designed to assess the relationship between skeletal and chronological ages among current American adolescents using the Greulich and Pyle atlas for skeletal age determination. Materials and methods We used the Greulich and Pyle atlas to prospectively determine skeletal age in a group of 138 otherwise healthy American adolescents from 12 to 18 years of age. 62 males and 76 females were enrolled in this cohort. Paired Studentt-tests were used to statistically compare the skeletal and chronological ages in this population. Subgroup analysis examined the effect of gender on differences between chronologic age and skeletal age. Results For the entire cohort, mean skeletal age was significantly greater than chronological age (mean 0.80 years, P < 0.01). In 29 cases (21%) the skeletal age was at least 2 years greater than the chronologic age. Among females, such cases with marked discrepancy occurred exclusively in those chronologically between 12 and 15 years of age (P < 0.01). Males demonstrated a 2-year or greater discrepancy more commonly than females (26 vs. 17%). In males, 2-year discrepancies were equally likely across chronologic ages (P = 0.82). Conclusions Current American adolescents are significantly more mature by skeletal age, as determined by the Greulich and Pyle method, than their chronological age would suggest. The skeletal ages of females are most likely to markedly exceed chronologic age between the ages of 12–15 years. Greulich and Pyle atlas (dpeaa)DE-He213 Skeletal (dpeaa)DE-He213 Chronological (dpeaa)DE-He213 Age (dpeaa)DE-He213 Bone (dpeaa)DE-He213 Sutter, Melanie aut Steffen, Jennifer A. aut Goldfarb, Charles A. aut Enthalten in Journal of children's orthopaedics London : Sage, 2007 4(2010), 5 vom: 02. Sept., Seite 467-470 (DE-627)523858221 (DE-600)2268264-8 1863-2548 nnns volume:4 year:2010 number:5 day:02 month:09 pages:467-470 https://dx.doi.org/10.1007/s11832-010-0289-z lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2006 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2057 GBV_ILN_2190 GBV_ILN_2707 GBV_ILN_2890 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 4 2010 5 02 09 467-470
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Materials and methods We used the Greulich and Pyle atlas to prospectively determine skeletal age in a group of 138 otherwise healthy American adolescents from 12 to 18 years of age. 62 males and 76 females were enrolled in this cohort. Paired Studentt-tests were used to statistically compare the skeletal and chronological ages in this population. Subgroup analysis examined the effect of gender on differences between chronologic age and skeletal age. Results For the entire cohort, mean skeletal age was significantly greater than chronological age (mean 0.80 years, P < 0.01). In 29 cases (21%) the skeletal age was at least 2 years greater than the chronologic age. Among females, such cases with marked discrepancy occurred exclusively in those chronologically between 12 and 15 years of age (P < 0.01). Males demonstrated a 2-year or greater discrepancy more commonly than females (26 vs. 17%). In males, 2-year discrepancies were equally likely across chronologic ages (P = 0.82). Conclusions Current American adolescents are significantly more mature by skeletal age, as determined by the Greulich and Pyle method, than their chronological age would suggest. 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author	Calfee, Ryan P.
spellingShingle	Calfee, Ryan P. misc Greulich and Pyle atlas misc Skeletal misc Chronological misc Age misc Bone Skeletal and chronological ages in American adolescents: current findings in skeletal maturation
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topic_title	Skeletal and chronological ages in American adolescents: current findings in skeletal maturation Greulich and Pyle atlas (dpeaa)DE-He213 Skeletal (dpeaa)DE-He213 Chronological (dpeaa)DE-He213 Age (dpeaa)DE-He213 Bone (dpeaa)DE-He213
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title	Skeletal and chronological ages in American adolescents: current findings in skeletal maturation
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title_full	Skeletal and chronological ages in American adolescents: current findings in skeletal maturation
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author_browse	Calfee, Ryan P. Sutter, Melanie Steffen, Jennifer A. Goldfarb, Charles A.
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title_sort	skeletal and chronological ages in american adolescents: current findings in skeletal maturation
title_auth	Skeletal and chronological ages in American adolescents: current findings in skeletal maturation
abstract	Purpose This study was designed to assess the relationship between skeletal and chronological ages among current American adolescents using the Greulich and Pyle atlas for skeletal age determination. Materials and methods We used the Greulich and Pyle atlas to prospectively determine skeletal age in a group of 138 otherwise healthy American adolescents from 12 to 18 years of age. 62 males and 76 females were enrolled in this cohort. Paired Studentt-tests were used to statistically compare the skeletal and chronological ages in this population. Subgroup analysis examined the effect of gender on differences between chronologic age and skeletal age. Results For the entire cohort, mean skeletal age was significantly greater than chronological age (mean 0.80 years, P < 0.01). In 29 cases (21%) the skeletal age was at least 2 years greater than the chronologic age. Among females, such cases with marked discrepancy occurred exclusively in those chronologically between 12 and 15 years of age (P < 0.01). Males demonstrated a 2-year or greater discrepancy more commonly than females (26 vs. 17%). In males, 2-year discrepancies were equally likely across chronologic ages (P = 0.82). Conclusions Current American adolescents are significantly more mature by skeletal age, as determined by the Greulich and Pyle method, than their chronological age would suggest. The skeletal ages of females are most likely to markedly exceed chronologic age between the ages of 12–15 years. © EPOS 2010
abstractGer	Purpose This study was designed to assess the relationship between skeletal and chronological ages among current American adolescents using the Greulich and Pyle atlas for skeletal age determination. Materials and methods We used the Greulich and Pyle atlas to prospectively determine skeletal age in a group of 138 otherwise healthy American adolescents from 12 to 18 years of age. 62 males and 76 females were enrolled in this cohort. Paired Studentt-tests were used to statistically compare the skeletal and chronological ages in this population. Subgroup analysis examined the effect of gender on differences between chronologic age and skeletal age. Results For the entire cohort, mean skeletal age was significantly greater than chronological age (mean 0.80 years, P < 0.01). In 29 cases (21%) the skeletal age was at least 2 years greater than the chronologic age. Among females, such cases with marked discrepancy occurred exclusively in those chronologically between 12 and 15 years of age (P < 0.01). Males demonstrated a 2-year or greater discrepancy more commonly than females (26 vs. 17%). In males, 2-year discrepancies were equally likely across chronologic ages (P = 0.82). Conclusions Current American adolescents are significantly more mature by skeletal age, as determined by the Greulich and Pyle method, than their chronological age would suggest. The skeletal ages of females are most likely to markedly exceed chronologic age between the ages of 12–15 years. © EPOS 2010
abstract_unstemmed	Purpose This study was designed to assess the relationship between skeletal and chronological ages among current American adolescents using the Greulich and Pyle atlas for skeletal age determination. Materials and methods We used the Greulich and Pyle atlas to prospectively determine skeletal age in a group of 138 otherwise healthy American adolescents from 12 to 18 years of age. 62 males and 76 females were enrolled in this cohort. Paired Studentt-tests were used to statistically compare the skeletal and chronological ages in this population. Subgroup analysis examined the effect of gender on differences between chronologic age and skeletal age. Results For the entire cohort, mean skeletal age was significantly greater than chronological age (mean 0.80 years, P < 0.01). In 29 cases (21%) the skeletal age was at least 2 years greater than the chronologic age. Among females, such cases with marked discrepancy occurred exclusively in those chronologically between 12 and 15 years of age (P < 0.01). Males demonstrated a 2-year or greater discrepancy more commonly than females (26 vs. 17%). In males, 2-year discrepancies were equally likely across chronologic ages (P = 0.82). Conclusions Current American adolescents are significantly more mature by skeletal age, as determined by the Greulich and Pyle method, than their chronological age would suggest. The skeletal ages of females are most likely to markedly exceed chronologic age between the ages of 12–15 years. © EPOS 2010
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title_short	Skeletal and chronological ages in American adolescents: current findings in skeletal maturation
url	https://dx.doi.org/10.1007/s11832-010-0289-z
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Skeletal and chronological ages in American adolescents: current findings in skeletal maturation

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