J Korean Orthop Assoc.  2012 Feb;47(1):59-63. 10.4055/jkoa.2012.47.1.59.

Rupture of the Extensor Tendon Secondary to Advanced Kienbock's Disease

• Kang CH
• Cho CH
• Kim KW

• KMID: 1439994
• DOI: http://doi.org/10.4055/jkoa.2012.47.1.59

Abstract

Rupture of the extensor tendon caused by a posteriorly displaced lunate fragment is an uncommon complication of Kienbock'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 Kienbock's disease that was successfully treated by excision of the lunate and a tendon transfer.

Keyword

Kienbock's disease; extensor tendon; rupture

MeSH Terms

Osteonecrosis
Rupture
Tendon Transfer
Tendons

Figure

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  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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