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Related Experiment Videos

Incidence and development of trigger thumb in children.

Noriaki Kikuchi1, Toshihiko Ogino

  • 1Department of Orthopaedic Surgery, Yamagata University School of Medicine, Iidanishi, Yamagata, Japan. nkikuchi@med.id.yamagata-u.ac.jp

The Journal of Hand Surgery
|April 25, 2006
PubMed
Summary

Trigger thumb is not present at birth but develops after birth. This study tracked 1,116 infants, finding acquired trigger thumb in 3.3 per 1,000 live births within the first year.

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Area of Science:

  • Pediatric Orthopedics
  • Developmental Pediatrics

Background:

  • The origin of trigger thumb (congenital or acquired) is debated.
  • Clarifying its developmental nature is crucial for understanding and management.

Purpose of the Study:

  • To determine if trigger thumb is present at birth.
  • To ascertain if trigger thumb is a congenital or acquired developmental condition.

Main Methods:

  • A cohort of 1,116 newborns was examined within 14 days of birth.
  • Infants were monitored for a year or more for the development of thumb flexion deformities.
  • Parental reporting via informational sheets was used for follow-up after hospital discharge.

Main Results:

  • No cases of trigger thumb were observed at birth.

Related Experiment Videos

  • Trigger thumb manifested in 5 children between 8 and 30 months of age.
  • The incidence of acquired trigger thumb in children aged 1 year was 3.3 per 1,000 live births.

    • Conclusions:

    • Trigger thumb is unlikely to be congenital.
    • The condition appears to develop postnatally, associated with growth.
    • Further monitoring may be needed to capture all cases beyond the first year.