Rate of displacement for jakob type 1 lateral condyle fractures treated with a cast

C. Zale, Z. A. Winthrop, W. Hennrikus

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Purpose The aim of this retrospective study is to report the rate of displacement of Jakob Type 1 lateral condyle fractures that were initially treated in a cast. Methods We performed a retrospective review of all patients that were treated for a non-displaced (Jakob Type 1 < 2 mm) lateral condyle fracture of the humerus at our institution between 2002 and 2015. Results A total of 59 patients were initially treated with casting. Five fractures displaced and were converted to a closed pinning treatment plan with a conversion rate of 8.5%. There was a mean of 13.2 days (4 to 21) between treatment by initial casting and closed pinning. Conclusion This study demonstrates an 8.5% displacement and conversion rate from cast treatment to closed pinning for initially non-displaced Jakob Type 1 lateral condyle fractures of the humerus. The internal oblique radiograph is most accurate to determine displacement. We recommend obtaining an internal oblique view at initial evaluation and at follow-up in the cast for lateral condyle fractures. To minimize movement at the fracture site, we recommend treating Jakob Type 1 lateral condyle fractures with a long arm cast with the elbow at 90° and the forearm in the supine position with a sling-loop design.

Original languageEnglish (US)
Pages (from-to)117-122
Number of pages6
JournalJournal of Children's Orthopaedics
Issue number2
StatePublished - Apr 2018

All Science Journal Classification (ASJC) codes

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


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