Congenital II: Radial longitudinal deficiency and thumb hypoplasia

Scott Oishi, Amy Lake, Nicholas Pulos

Research output: Chapter in Book/Report/Conference proceedingChapter


Radial longitudinal deficiency (RLD) is the most common upper limb longitudinal deficiency. Initial evaluation not only includes assessment of the upper extremity, but also addresses the high incidence of associated medical conditions and syndromes. Patients with RLD represent a spectrum of pathology ranging from thumb hypoplasia distally to phocomelia affecting more proximal segments. In patients with radial dysplasia, initial treatment focuses on stretching, orthosis fabrication, and assessing developmentally appropriate functional activities with a trend toward less invasive surgical corrections. Treatment of the hypoplastic thumb is based on thumb stability and may require serial examinations with a therapist to determine the appropriate surgical plan. Therapy must take into account not only the pathology and surgical procedures performed, but also the child and parent’s ability to participate in therapy and orthosis wear.

Original languageEnglish (US)
Title of host publicationPediatric Hand Therapy
Number of pages14
ISBN (Electronic)9780323530910
ISBN (Print)9780323530934
StatePublished - Jan 1 2019


  • Bilobed flap
  • Functional activities
  • Opponensplasty
  • Orthosis
  • Pollicization
  • Radial clubhand
  • Radial dysplasia
  • Radial longitudinal deficiency
  • RLD
  • Thumb hypoplasia

ASJC Scopus subject areas

  • Medicine(all)
  • Health Professions(all)


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