Greater Trochanter Height: A Quantitative Predictor of Skeletal Maturity.
J Pediatr Orthop
; 41(2): 99-104, 2021 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-33284139
ABSTRACT
BACKGROUND:
The purpose of this investigation was to develop a quantitative and reproductible method for estimating skeletal maturity based on measurements of the height of the bony greater trochanter (GT) using timing to 90% of final height as a gold standard.METHODS:
Bony GT height was measured using serial anteroposterior pelvic radiographs in 76 healthy pediatric patients obtained from the Bolton-Brush (BB) Study with corresponding Greulich-Pyle (GP) bone ages. Chronologic age at 90% of final height was calculated. GT height was then measured in 300 contemporary patients aged 4 to 18 years, evenly divided based on sex and race. Bony GT height was compared between BB and contemporary patients, while linear mixed-effects models were used to examine for potential predictors of years to 90% final height using patient sex, GP bone age and bony GT height measurements.RESULTS:
Bony GT height was measured in 303 radiographs from the BB Collection (n=37 males; n=39 females) with corresponding GP bone ages, chronological ages, and heights to represent skeletal maturity. Mean age at 90% final height was 13.3±0.6 years for males and 11.4±0.8 years for females. When controlling for patient age and sex, multiple regression analysis revealed that contemporary patients possessed significantly greater bony GT height (mean difference 1.15 mm; P=0.001) when compared with BB patients. Multivariate analysis showed that combining bony GT height, GP bone age, and sex significantly predicted years to 90% total growth (P<0.001) and explained â¼85% (95% confidence interval for R2 82%-87%) of the total variance in years using 90% of final height, with sex, GP bone age, and GT height all significant contributors.CONCLUSIONS:
Including bony GT height provides more accurate prediction of 90% final height when combined with GP bone age and sex. GT height offers an efficient and accurate parameter that may be utilized in pediatric orthopedic conditions requiring a quantitative estimate of bone age in children with prior pelvis or hip imaging. LEVEL OF EVIDENCE Level II-diagnostic study.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Determinação da Idade pelo Esqueleto
/
Fêmur
Tipo de estudo:
Diagnostic_studies
/
Evaluation_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adolescent
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Child
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Child, preschool
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Female
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Humans
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Male
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article