Closed rupture of extensor tendon resulting from untreated Kienböck disease

Abstract

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Artificial Lunate Arthroplasty for Kienböck Disease With Multiple Extensor Tendon Ruptures

“…Two reviews have previously summarized the characteristics of extensor tendon rupture in Kienböck disease 1,2 . In the Lichtman classification, extensor tendon rupture predominantly occurs among older patients with advanced stages, such as stages IIIb or IV.…”

“…Partial or total excision of the displaced fragment is less invasive and is thus the most commonly performed procedure for this condition 1,3,5,[7][8][9][10] . By contrast, partial wrist arthrodesis or PRC is invasive for the wrist and has been reported in a few studies 2,4,6 .…”

“…Kienböck disease is the avascular necrosis of the lunate resulting in degenerative changes of the carpus. Advanced Kienböck disease can cause the development of a dorsally displaced fragment, which may trigger an attritional rupture of the extensor tendons 1,2 . Closed extensor tendon rupture is a relatively rare complication of Kienböck disease, first reported in 1986 3 .…”

Closed extensor tendon rupture caused by Kienböck disease: a case report

“…Hernandez-Cortes et al reported that the association between Kienböck disease and tendon rupture may result in delayed treatment and poor prognosis due to improper preoperative imaging and physical examination [ 7 , 9 ]. Tomori et al [ 2 ] reported a ruptured EDC tendon of the ring finger due to Kienböck disease in a patient who delayed treatment for 6 months because she lacked symptoms in her everyday functions.…”

“…Kienböck disease results from avascular necrosis of the lunate bone and leads to dislocation of the carpal bone. It can cause closed tendon rupture by attritional injury of the tendon due to a collapsed fragment of the lunate bone [ 2 ]. Closed rupture of the extensor tendons secondary to necrosis and collapse of the lunate bone mainly affects the extensor indicis proprius (EIP) of the index finger and the fourth compartment of the extensor tendons [ 3 ].…”