Severity of ulnar deficiency and its relationship with lower extremity deficiencies

Janet L. Walker, Pooya Hosseinzadeh, Justin Lea, Hank White, Sheila Bell, Scott A. Riley

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


To assess the characteristics of ulnar deficiency (UD) and their relationship to lower extremity deficiencies, we retrospectively classified 82 limbs with UD in 62 patients, 55% of whom had femoral, fibular, or combined deficiencies. In general, UD severity classification at one level (elbow, ulna, fingers, thumb/first web space) statistically correlated with similar severity at another. Ours is the first study to show that presence of a lower limb deficiency is associated with less severe UD on the basis of elbow, ulnar, and thumb/first web parameters. This is consistent with the embryological timing of proximal upper extremities developing before the lower extremities.

Original languageEnglish
Pages (from-to)62-66
Number of pages5
JournalJournal of Pediatric Orthopaedics Part B
Issue number1
StatePublished - Jan 1 2019


  • embryology
  • fibular deficiency
  • fibular hemimelia
  • limb development
  • ulnar club hand
  • ulnar dysmelia
  • ulnar hemimelia


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