Classification of metaphyseal change with magnetic resonance imaging in Legg-Calve-Perthes disease

Hae Ryong Song, Sanjay Dhar, Jae Boem Na, Se Hyun Cho, Byung Woo Ahn, Suck Myun Ko, Seung Woo Suh, Kyung Hoi Koo

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Seventy-eight patients (85 affected hips and 71 unaffected hips) with Legg-Calve-Perthes disease were included in this study to evaluate the metaphyseal change in radiographs and magnetic resonance imaging (MR1) and to define the type of the metaphyseal cyst according to presence or absence of the epiphyseal involvement. The content of the metaphyseal cyst was evaluated by using T1, T2, proton, and gadolinium-enhanced T1-weighted MRI scans. Among 85 hips, there were no changes in 32 hips, marrow edema in 13 hips, false cyst with epiphyseal involvement in 28 hips, and true cyst without epiphyseal involvement in 12 hips. Granulation tissue was found in the false cysts and water-rich fibrotic tissue was found in the true cysts based on the MRI scans. The metaphyseal change in MRI scans was shown in 71% of groups 3 and 4 and in 35% of groups 1 and 2 according to the Catterall classification, and 52% of group A, 56% of group B, and 86% of group C according to the Herring classification. Of the 30 hips at the avascular stage, 33% showed metaphyseal cyst in MRI scans. Of the 53 hips at the fragmentation stage, 60% showed the metaphyseal cyst.

Original languageEnglish
Pages (from-to)557-561
Number of pages5
JournalJournal of Pediatric Orthopaedics
Volume20
Issue number5
DOIs
Publication statusPublished - 2000

Keywords

  • Classification
  • Legg-Calve-Perthes disease
  • Magnetic resonance imaging
  • Metaphyseal cyst

ASJC Scopus subject areas

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

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