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Case Reports
. 2025 Feb 27;7(3):100703.
doi: 10.1016/j.jhsg.2025.01.012. eCollection 2025 May.

A Rare Case of Prosthetic Lunate Dislocation

Michael Brown  1 , Daniel S Lippe  1 , Shaan Sadhwani  1 , Brendan M Sweeney  1 , Anna Elisa Muzio  1
Affiliations
Case Reports

A Rare Case of Prosthetic Lunate Dislocation

Michael Brown et al. J Hand Surg Glob Online. .

Abstract

Kienböck disease is an uncommon entity in hand surgery. The current treatments for Kienböck disease consist of revascularization procedures, limited intercarpal fusions, or carpectomies. Historically, a carpectomy with placement of a prosthetic lunate was the procedure of choice. This has fallen out of favor because of complications such as synovitis, infection, and development of pericarpal arthritis. We report a case of prosthetic lunate dislocation in a 70-year-old woman who underwent a lunate replacement due to Kienböck disease over 40 years ago at an outside institution. In recent years, the patient had reported an occasional clicking sensation in her wrist with mild discomfort. Unfortunately, after a round of golf she developed acute wrist pain. Subsequent imaging revealed a volarly dislocated prosthetic lunate. She underwent a subsequent proximal row carpectomy.

Keywords: Carpal; Dislocation; Lunate; Replacement.

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Conflict of interest statement

No benefits in any form have been received or will be received related directly to this article.

Figures

Figure 1
Figure 1
Anteroposterior, oblique, and lateral view of the left hand demonstrating volar displacement of the prosthetic lunate.
Figure 2
Figure 2
Coronal, axial, and sagittal view demonstrating volar displacement of the prosthetic lunate.
Figure 3
Figure 3
Using the dorsal approach to the wrist, the carpal row was exposed. Clear visualization of the prosthetic lunate was achieved (black box).
See this image and copyright information in PMC

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