Novel application of 3D printing to development of a homemade posterior-stabilized knee cement spacer
Publication in refereed journal


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摘要Background: Articulating spacer facilitates reimplantation in two stage revision for knee periprosthetic infection. However, despite the prevalence of posterior stabilizing prostheses, most commercial prefabricated spacers are cruciate retaining with the problem of sagittal instability. This study reported the design and use of a novel intra-operatively molded, posterior stabilizing spacer developed in hospital setting using 3D printing technology. Method: The design began with analysis of our hospital joint registry to identify commonly used models and sizes. Features of the 4 most commonly used models were incorporated into the design of the new spacer using computer aided design software. Three sets of dimensions were identified to form the 3 sizes of the new spacer. The prototype was output with 3D printing for producing mold for intra-operative use. Case Report: A 68 years old lady was suffering from recurrent periprosthetic infection 6 months after right total knee arthroplasty. Two stage revisions were performed with the new spacer. Postoperative X-ray showed optimal fitting with the absence of posterior sagging. Conclusion: The 3D printing technology has enabled the domestic development of cement spacer with personalized design, minimal inventory and improved stability.
出版社接受日期06.12.2021
著者Elvis Chun-Sing Chui, Lawrence Chun-Man Lau, Xin Ye, Kyle Ka-Kwan Mak, Ka-Bon Kwok, Kwoon-Ho Chow, Ronald Man-Yeung Wong, Sheung-Wai Law, Michael TimYun Ong, Louis Wing-Hoi Cheung, Patrick Shu-Hang Yung
期刊名稱Clinics In Surgery
出版年份2021
月份12
日期14
卷號6
期次1
出版社Remedy Publications
出版地USA
文章號碼3385
國際標準期刊號2474-1647
語言美式英語
關鍵詞Periprosthetic infection, Knee, Arthroplasty, Spacer, Computer aided design, 3D printing

上次更新時間 2022-05-12 於 15:40