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Aged-onset Kienböck's disease.

T Yoshida1, K Tada, K Yamamoto

  • 1Department of Orthopedic Surgery, Kagawa Medical School, Japan.

Archives of Orthopaedic and Trauma Surgery
|January 1, 1990
PubMed
Summary

Aged-onset Kienböck's disease, a rare condition, affects individuals over 50. Studies suggest negative ulnar variance and osteoporosis may increase lunate bone susceptibility to injury.

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Area of Science:

  • Orthopedics
  • Geriatric Medicine
  • Radiology

Background:

  • Kienböck's disease typically affects younger adults, but late-onset cases present unique challenges.
  • Understanding risk factors for Kienböck's disease in older populations is crucial for diagnosis and management.

Purpose of the Study:

  • To investigate the characteristics and potential contributing factors of Kienböck's disease with onset after 50 years of age.
  • To compare radiographic findings in aged patients with Kienböck's disease to age-matched and younger controls.

Main Methods:

  • Retrospective analysis of 15 patients diagnosed with Kienböck's disease after age 50.
  • Operative specimens were examined for lunate bone pathology.
  • Radiographic measurements including ulnar variance and metacarpal index were compared between patient groups and controls.

Main Results:

  • The average age of onset was 58.3 years, with a predominance in females.
  • Operative specimens showed lunate bone necrosis, empty lacunae, and bony remodeling.
  • Aged patients with Kienböck's disease exhibited smaller ulnar variance compared to aged controls.
  • The metacarpal index was significantly lower in aged-onset Kienböck's disease patients compared to younger individuals.

Conclusions:

  • Late-onset Kienböck's disease is associated with specific radiographic findings, including reduced ulnar variance.
  • Factors such as increased ulnar variance with age, persistent negative variance, and osteoporosis may predispose the lunate bone to injury in older adults.

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