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Case Reports
. 2022 Aug 26;10(24):8761-8767.
doi: 10.12998/wjcc.v10.i24.8761.

Application of 3 dimension-printed injection-molded polyether ether ketone lunate prosthesis in the treatment of stage III Kienböck's disease: A case report

Cheng-Song Yuan  1 , Yao Tang  1 , Hai-Qiong Xie  1 , Tao-Tao Liang  1 , Hong-Tao Li  1 , Kang-Lai Tang  2
Affiliations
Case Reports

Application of 3 dimension-printed injection-molded polyether ether ketone lunate prosthesis in the treatment of stage III Kienböck's disease: A case report

Cheng-Song Yuan et al. World J Clin Cases. .

Abstract

Background: Polyether ether ketone (PEEK) is a high-performance medical polymer, and there are some clinical cases of PEEK prosthesis implantation. However, application of 3D-printed injection-molded PEEK lunate prosthesis for treatment of stage III Kienböck's disease has not been reported. This study's purpose was to analyze the clinical efficacy of 3D-printed injection-molded PEEK lunate prosthesis in the treatment of stage III Kienböck's disease and thus provide a good therapeutic choice for Kienböck's disease.

Case summary: We report a patient with stage III Kienböck's disease. With the healthy lunate bone as reference, 3D lunate reconstruction was performed using a mirroring technique. A PEEK lunate prosthesis was prepared by 3D printing and injection molding, and then it was inserted into the original anatomical position after removing the necrotic lunate bone. Wrist pain and function, anatomical suitability of the lunate prosthesis, and complications were evaluated and analyzed postoperatively. At the last visit (one year after surgery), the range of motion, grasp force, visual analog scale score and Cooney score of the affected wrist were significantly improved, and postoperative X-ray examination indicated that the lunate prosthesis had good anatomical suitability for adjacent bony structures.

Conclusion: The 3D-printed injection-molded PEEK lunate prosthesis demonstrated definite efficacy in treating stage III Kienböck's disease.

Keywords: 3D printing; Case report; Clinical outcomes; Kienböck disease; Lunate collapse; Lunate fixation; Polyetheretherketone.

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Conflict of interest statement

Conflict-of-interest statement: All authors report no relevant conflict of interest for this article.

Figures

Figure 1
Figure 1
Preoperative imaging findings. A-C: Preoperative radiographs (A), computed tomography (B) and magnetic resonance imaging (C), the arrow shows the necrotic lunate bone.
Figure 2
Figure 2
The process of 3D-printed injection-molded polyether ether ketone lunate prosthesis. A: The original data of healthy lunate bone were obtained by computed tomography; B-D: 3D model of lunate prosthesis using mirroring technique; E: Prosthesis structure was prepared by injection molding.
Figure 3
Figure 3
Intraoperative photographs. A: Necrotic lunate bone resected; B: Necrotic lunate bone and custom-made lunate bone prosthesis of different sizes; C: Prosthesis in the original anatomic position of lunate bone.
Figure 4
Figure 4
Postoperative imaging findings. Postoprative radiographs (A) and computed tomography (1 yr) (B).
See this image and copyright information in PMC

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