Unilateral versus bilateral clubfoot: an analysis of severity and correlation

Kelly Gray*, Elizabeth Barnes, Paul Gibbons, David Little, Joshua Burns

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


This study compares the severity of unilateral and bilateral clubfoot, and the correlation between right and left feet of bilateral cases. Sixty-six unilateral and 75 bilateral clubfoot patients were assessed for severity using the Pirani score at an average age of 12.9 days (SD 9 days). In bilateral cases, the severity of right and left feet was highly correlated (r=0.68). The odds of being very severe were 2.6 (95% confidence interval 1.3-5.1) times higher in bilateral cases (P=0.007). Bilateral and unilateral clubfeet present with differing severity. Right and left feet from bilateral cases are highly correlated. Researchers need to address these issues during study design and analysis.

Original languageEnglish
Pages (from-to)397-399
Number of pages3
JournalJournal of Pediatric Orthopaedics Part B
Issue number5
Publication statusPublished - Sept 2014
Externally publishedYes


  • Bilateral clubfoot
  • Correlation
  • Idiopathic clubfoot
  • Pirani clubfoot severity score
  • Unilateral clubfoot


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