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Ulnar nerve instability in children

I Zaltz1, P M Waters, J R Kasser

  • 1Department of Orthopaedics, Children's Hospital, Boston, MA 02115, USA.

Journal of Pediatric Orthopedics
|September 1, 1996
PubMed
Summary
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Pediatric ulnar nerve instability is common, particularly in younger children. This condition is strongly linked to generalized ligamentous laxity, indicating a need for further investigation in pediatric orthopedics.

Area of Science:

  • Orthopedics
  • Pediatric Medicine
  • Neurology

Background:

  • Ulnar nerve instability can cause significant morbidity in children.
  • Ligamentous laxity is a known risk factor for joint instability.

Purpose of the Study:

  • To determine the prevalence of ulnar nerve instability in children.
  • To investigate the relationship between ulnar nerve instability and ligamentous laxity in pediatric patients.

Main Methods:

  • Cross-sectional study design.
  • Inclusion of pediatric patients across three age groups (0-5, 6-10, 11-18 years).
  • Assessment of ulnar nerve instability and presence of Wynne-Davies signs for ligamentous laxity.

Main Results:

Related Experiment Videos

  • Prevalence of dislocating ulnar nerves: 17.7% in group I, 7.7% in group II, and 5.7% in group III.
  • Nerve instability was predominantly bilateral.
  • In children with five Wynne-Davies signs, 25.4% had dislocating nerves and 71.9% had subluxing nerves.
  • Significant statistical association found between age, ulnar nerve instability, and ligamentous laxity (p < 0.0001).

    • Conclusions:

    • Ulnar nerve instability is prevalent in children, with higher rates in younger age groups.
    • Generalized ligamentous laxity is strongly associated with pediatric ulnar nerve instability.
    • Findings suggest a potential genetic predisposition or developmental factor linking ligamentous laxity and ulnar nerve instability in children.