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Extensor tendon rupture due to Kienböck's disease

T Murase1, Y Ando, K Hiroshima

  • 1Department of Orthopaedics, Osaka National Hospital, Japan.

Journal of Hand Surgery (Edinburgh, Scotland)
|September 30, 1998
PubMed
Summary

Extensor tendon rupture is a rare complication of Kienböck

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Area of Science:

  • Orthopedic Surgery
  • Hand Surgery
  • Vascularized Bone Grafts

Background:

  • Kienböck's disease involves avascular necrosis of the lunate.
  • Complications can include carpal instability and secondary arthritis.
  • Extensor tendon involvement is an uncommon sequela.

Observation:

  • A comminuted dorsal fragment of the lunate caused attritional rupture of the index finger extensor tendon.
  • The patient was an elderly woman with a history of Kienböck's disease.

Findings:

  • Surgical excision of the bony fragment was performed.
  • Extensor tendon reconstruction using a tendon graft was successful.
  • The patient achieved a favorable functional outcome.

Implications:

  • This case highlights a rare but significant complication of Kienböck's disease.
  • Surgical management involving fragment excision and tendon reconstruction can restore function.
  • Emphasizes the importance of considering tendon integrity in advanced Kienböck's disease.

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