Journal List > J Korean Orthop Assoc > v.47(1) > 1013201

Kang, Cho, and Kim: Rupture of the Extensor Tendon Secondary to Advanced Kienböck's Disease

Abstract

Rupture of the extensor tendon caused by a posteriorly displaced lunate fragment is an uncommon complication of Kienböck's disease. Thirteen cases have been reported in the English literatures, but it has never been reported in the Korean literatures. We report a case of rupture of the third and fourth extensor tendons secondary to advanced Kienböck's disease that was successfully treated by excision of the lunate and a tendon transfer.

Figures and Tables

Figure 1
Preoperative radiographs show collapsed and fragmented lunate.
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Figure 2
Computed tomograph shows fragmented lunate with displaced dorsal fragment.
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Figure 3
Intraoperative photograph shows that displaced dorsal fragment of lunate pierced the wrist joint capsule (black arrow) and protruded into 4th extensor compartment. The 3rd and 4th extensor tendons were ruptured by attrition.
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Table 1
Reported Cases of Extensor Tendon Rupture Secondary to Kienböck's Disease
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EDC, extensor digitorum communis; ECRB, extensor carpi radialis brevis; PL, palmaris longus; EI, extensor indicis; EDM, extensor digiti minimi.

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