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Three rare causes of extensor tendon rupture.

F J Harvey1, P M Harvey

  • 1Hand and Microsurgery Unit, Royal North Shore Hospital, Sydney, Australia.

The Journal of Hand Surgery
|November 1, 1989
PubMed
Summary

Rupture of finger extensor tendons by attrition is rare. This report details three unique cases linked to scaphoid fracture nonunion, distal ulna subluxation, and Madelung

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Area of Science:

  • Orthopedic Surgery
  • Hand Surgery
  • Musculoskeletal Conditions

Background:

  • Rupture of finger extensor tendons by attrition is an uncommon injury.
  • Previous literature has not documented this specific type of rupture in association with the conditions presented.

Purpose of the Study:

  • To report three unusual cases of finger extensor tendon rupture due to attrition.
  • To highlight the association of this rare injury with specific pre-existing orthopedic conditions.

Main Methods:

  • Case report series.
  • Clinical examination and review of patient histories.
  • Radiographic assessment.

Main Results:

  • Three patients presented with finger extensor tendon rupture from attrition.
  • Case 1: Associated with long-standing nonunion of a scaphoid fracture.
  • Case 2: Associated with posttraumatic dorsal subluxation of the distal ulna.
  • Case 3: Associated with Madelung's deformity.

Conclusions:

  • Finger extensor tendon rupture by attrition can occur in the context of specific underlying orthopedic pathologies.
  • These cases expand the known associations for this rare tendon injury.
  • Further investigation may be warranted to understand the biomechanics involved.

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