Novel curved surface preparation technique for knee resurfacing
File(s)
Accepted version
Author(s)
Li, Jianmo
Clarke, Susannah
Cobb, Justin P
Amis, Andrew A
Type
Journal Article
Abstract
Conventional tools are incapable of preparing the curved articular surface geometry required during cartilage repair procedures. A novel curved surface preparation technique was proposed and tested to provide an accurate low-cost solution. Three shapes of samples, with flat, 30 mm radius and 60 mm radius surfaces, were manufactured from foam bone substitute for testing. Registering guides and cutting guides were designed and 3-D printed to fit onto the foam samples. A rotational cutting tool with an adapter was used to prepare the surfaces following the guidance slots in the cutting guides. The accuracies of the positions and shapes of the prepared cavities were measured using a digital calliper, and the surface depth accuracy was measured using a 3-D scanner. The mean shape and position errors were both approximately ± 0.5 mm and the mean surface depth error ranged from 0 to 0.3 mm, range − 0.3 to + 0.45 mm 95% CI. This study showed that the technique was able to prepare a curved surface accurately; with some modification it can be used to prepare the knee surface for cartilage repair.
Date Issued
2017-08-23
Date Acceptance
2017-07-30
Citation
Medical Engineering and Physics, 2017, 49, pp.89-93
ISSN
1350-4533
Publisher
Elsevier
Start Page
89
End Page
93
Journal / Book Title
Medical Engineering and Physics
Volume
49
Copyright Statement
© 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Subjects
Science & Technology
Technology
Engineering, Biomedical
Engineering
Curved bone resection
Joint resurfacing
3-D printing
Cartilage repair instruments
SURVIVAL ANALYSIS
FOLLOW-UP
ARTHROPLASTY
OSTEOARTHRITIS
CARTILAGE
REPAIR
REPLACEMENT
POPULATION
PREVALENCE
ACCURACY
Publication Status
Published