Clinical characteristics of children with atypical and idiopathic slipped capital femoral epiphysis: Description of the age-weight test and implications for further diagnostic investigation

Randall T. Loder, Mary Lou V.H. Greenfield

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Slipped capital femoral epiphyses (SCFEs) can be idiopathic or atypical (associated with renal failure, radiation therapy, and endocrine disorders). The demographics of 433 children (285 idiopathic, 148 atypical) with 612 SCFEs were studied to define predictors of atypical SCFEs. Multiple logistic regression analysis showed that age and weight were predictors. For two patients of equal weight, those younger than 10 or older than 16 years of age were 4.2 times more likely to have an atypical SCFE; for two patients of equal age, those <50th percentile weight were 8.4 times more likely. The age-weight test was defined as negative when age younger than 16 years and weight ≥50th percentile and positive when beyond these boundaries. The probability of a child with a negative test result having an idiopathic SCFE was 93%, and the probability of a child with a positive test result having an atypical SCFE was 52%. An evaluation of the child's age and weight is useful when considering the cause of an SCFE.

Original languageEnglish (US)
Pages (from-to)481-487
Number of pages7
JournalJournal of Pediatric Orthopaedics
Volume21
Issue number4
DOIs
StatePublished - Jul 16 2001
Externally publishedYes

Keywords

  • Age
  • Endocrine disorder
  • Radiation therapy
  • Renal failure
  • Slipped capital femoral epiphysis
  • Weight

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Orthopedics and Sports Medicine

Fingerprint Dive into the research topics of 'Clinical characteristics of children with atypical and idiopathic slipped capital femoral epiphysis: Description of the age-weight test and implications for further diagnostic investigation'. Together they form a unique fingerprint.

Cite this