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The contralateral hip in slipped capital femoral epiphysis : Is there an easy-to-use algorithm to support a decision for prophylactic fixation?

Lindell, Mikael ; Sköldberg, Martin ; Stenmarker, Margaretha ; Michno, Piotr and Herngren, Bengt LU (2022) In Journal of Children's Orthopaedics 16(4). p.297-305
Abstract

Purpose: To identify a specific factor that can support the decision for prophylactic fixation in unilateral slipped capital femoral epiphysis. Methods: This retrospective cohort study included a total national population of 379 children diagnosed with slipped capital femoral epiphysis from 2007 to 2013. Regression analysis used information on slip severity, clinical classification of the index hip, age, sex, age-adjusted body mass index, the difference in epiphyseal–diaphyseal angle, and comorbidity to identify any risk factor for the subsequent development of a slip in the contralateral hip. Four observers evaluated the triradiate cartilage following the modified Oxford bone score grade. The occurrence of later development of a... (More)

Purpose: To identify a specific factor that can support the decision for prophylactic fixation in unilateral slipped capital femoral epiphysis. Methods: This retrospective cohort study included a total national population of 379 children diagnosed with slipped capital femoral epiphysis from 2007 to 2013. Regression analysis used information on slip severity, clinical classification of the index hip, age, sex, age-adjusted body mass index, the difference in epiphyseal–diaphyseal angle, and comorbidity to identify any risk factor for the subsequent development of a slip in the contralateral hip. Four observers evaluated the triradiate cartilage following the modified Oxford bone score grade. The occurrence of later development of a contralateral slip in different stage of physeal closure was used to analyze the sensitivity and specificity for this method. Results: This study’s only predictor for a subsequent contralateral slip was chronological age. At age 13 years or older, 1/15 in girls and 3/65 in boys suffered from a slip in the contralateral hip. Thus, when using age <13 years as a test for deciding when to do prophylactic fixation, the sensitivity would be 88% and specificity 51% for preventing contralateral slip. However, the correlation between the four different observers was too low to be considered useful when assessing the triradiate cartilage for skeletal maturity. Conclusion: We would advocate a prophylactic fixation for children <13 years diagnosed with a unilateral slipped capital femoral epiphysis as an easy-to-use algorithm. Level of evidence: level II.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
prophylactic fixation, Slipped capital femoral epiphysis, slipped upper femoral epiphysis
in
Journal of Children's Orthopaedics
volume
16
issue
4
pages
9 pages
publisher
Springer
external identifiers
  • pmid:35992523
  • scopus:85135219919
ISSN
1863-2521
DOI
10.1177/18632521221107748
language
English
LU publication?
yes
id
7b6a520b-b733-46fd-85b4-cb9fcedc362f
date added to LUP
2022-09-20 14:18:08
date last changed
2024-04-18 15:51:42
@article{7b6a520b-b733-46fd-85b4-cb9fcedc362f,
  abstract     = {{<p>Purpose: To identify a specific factor that can support the decision for prophylactic fixation in unilateral slipped capital femoral epiphysis. Methods: This retrospective cohort study included a total national population of 379 children diagnosed with slipped capital femoral epiphysis from 2007 to 2013. Regression analysis used information on slip severity, clinical classification of the index hip, age, sex, age-adjusted body mass index, the difference in epiphyseal–diaphyseal angle, and comorbidity to identify any risk factor for the subsequent development of a slip in the contralateral hip. Four observers evaluated the triradiate cartilage following the modified Oxford bone score grade. The occurrence of later development of a contralateral slip in different stage of physeal closure was used to analyze the sensitivity and specificity for this method. Results: This study’s only predictor for a subsequent contralateral slip was chronological age. At age 13 years or older, 1/15 in girls and 3/65 in boys suffered from a slip in the contralateral hip. Thus, when using age &lt;13 years as a test for deciding when to do prophylactic fixation, the sensitivity would be 88% and specificity 51% for preventing contralateral slip. However, the correlation between the four different observers was too low to be considered useful when assessing the triradiate cartilage for skeletal maturity. Conclusion: We would advocate a prophylactic fixation for children &lt;13 years diagnosed with a unilateral slipped capital femoral epiphysis as an easy-to-use algorithm. Level of evidence: level II.</p>}},
  author       = {{Lindell, Mikael and Sköldberg, Martin and Stenmarker, Margaretha and Michno, Piotr and Herngren, Bengt}},
  issn         = {{1863-2521}},
  keywords     = {{prophylactic fixation; Slipped capital femoral epiphysis; slipped upper femoral epiphysis}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{297--305}},
  publisher    = {{Springer}},
  series       = {{Journal of Children's Orthopaedics}},
  title        = {{The contralateral hip in slipped capital femoral epiphysis : Is there an easy-to-use algorithm to support a decision for prophylactic fixation?}},
  url          = {{http://dx.doi.org/10.1177/18632521221107748}},
  doi          = {{10.1177/18632521221107748}},
  volume       = {{16}},
  year         = {{2022}},
}