Testing & Diagnosis for Thumb Hypoplasia/Aplasia in Children

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Contact the Hand and Orthopedic Upper Extremity Program

  • 617-355-6021
  • International: +1-617-355-5209
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How is an underdeveloped or absent thumb diagnosed?

•   Thumb hypoplasia and aplasia are usually detected during your baby’s first
    newborn exam.
•   Seeing this deformity will prompt your child's doctor to look for other
    deformities that are sometimes associated with this condition.
•   An x-ray can help doctors examine the internal structures of your child’s
•   Other tests will depend on whether the doctor believes the thumb deformity
    is associated with another condition.

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- Sandra L. Fenwick, President and CEO

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