Prognostic radiographic factors in developmental dysplasia of the hip following Salter osteotomy

Chia Hsieh Chang, Wen E. Yang, Hsuan Kai Kao, Wei Chun Lee, Chun Hsiung Shih, Ken N. Kuo

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Radiographic parameters for evaluating hip development are altered by Salter osteotomy, and their prognostic value require further validation. A total of 63 patients who underwent open reduction and Salter osteotomy for unilateral hip dysplasia were evaluated with Severin classification 10.8 years later. The initial first-year postoperative acetabular index, c/b ratio, head-teardrop distance, and head coverage were compared with the final outcome of Severin classification. Greater c/b ratio was significantly associated with later Severin class III hip. Using receiver operating characteristics curve, a c/b ratio greater than 0.72 at 6 months and 1 year postoperatively can predict the possibility of a class III hip in 30 and 60% of patients, respectively.

Original languageEnglish
Pages (from-to)31-34
Number of pages4
JournalJournal of Pediatric Orthopaedics Part B
Issue number1
Publication statusPublished - Jan 2015


  • Developmental dysplasia of the hips
  • Ratio
  • Salter osteotomy

ASJC Scopus subject areas

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


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