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Extensor tendon rupture caused by instability of the ulnar head with an osteoarthritic distal radioulnar joint: a case report

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Author(s)
Chul-Hyun ChoSi-Wuk Lee
Keimyung Author(s)
Cho, Chul HyunLee, Si Wook
Department
Dept. of Orthopedic Surgery (정형외과학)
Journal Title
Journal of Medical Case Reports
Issued Date
2013
Volume
7
Keyword
Extensor tendonDistal radioulnar jointRuptureOsteoarthritisInstabilityScallop sign
Abstract
Introduction: Although spontaneous extensor tendon rupture often occurs in association with rheumatoid arthritis,
extensor tendon rupture associated with osteoarthritis of the distal radioulnar joint has been rarely reported.
Case presentation: We present the case of a 74-year-old Asian woman with a fourth and fifth extensor tendon
rupture caused by instability of the ulnar head associated with an osteoarthritic distal radioulnar joint. Intraoperative
findings showed that the cause of the dorsal capsular perforation and extensor tendon rupture was mechanical
friction with the unstable ulnar head, which had no osteophytes or roughness. After tendon transfer and resection
of the ulnar head, our patient can extend her ring and little fingers without difficulty for her daily activities.
Conclusions: When a patient with osteoarthritic distal radioulnar joint has instability of the ulnar head and the
‘scallop sign’ on radiography, physicians should consider the possibility of extensor tendon rupture as a
complication.
Keimyung Author(s)(Kor)
조철현
이시욱
Publisher
School of Medicine
Citation
Chul-Hyun Cho and Si-Wuk Lee. (2013). Extensor tendon rupture caused by instability of
the ulnar head with an osteoarthritic distal
radioulnar joint: a case report. Journal of Medical Case Reports, 7, 281–281. doi: 10.1186/1752-1947-7-281
Type
Article
ISSN
1752-1947
DOI
10.1186/1752-1947-7-281
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/34161
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학)
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