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Three rare causes of extensor tendon rupture.
1Hand and Microsurgery Unit, Royal North Shore Hospital, Sydney, Australia.
The Journal of Hand Surgery
|November 1, 1989
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
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.