Next Article in Journal
The Setup Design for Selective Laser Sintering of High-Temperature Polymer Materials with the Alignment Control System of Layer Deposition
Next Article in Special Issue
Comparative Analysis of Machining Procedures
Previous Article in Journal / Special Issue
The Dimensional Precision of Forming Windows in Bearing Cages
Article Menu

Export Article

Open AccessArticle
Machines 2018, 6(1), 10; https://doi.org/10.3390/machines6010010

Precision CNC Machining of Femoral Component of Knee Implant: A Case Study

Section of Manufacturing Technology, School of Mechanical Engineering, National Technical University of Athens, Heroon Politechniou 9, 15780 Athens, Greece
*
Author to whom correspondence should be addressed.
Received: 13 February 2018 / Revised: 27 February 2018 / Accepted: 28 February 2018 / Published: 2 March 2018
(This article belongs to the Special Issue Precision Machining)
View Full-Text   |   Download PDF [4212 KB, uploaded 2 March 2018]   |  

Abstract

The design and manufacturing of medical implants constitutes an active and highly important field of research, both from a medical and an engineering point of view. From an engineering aspect, the machining of implants is undoubtedly challenging due to the complex shape of the implants and the associated restrictive geometrical and dimensional requirements. Furthermore, it is crucial to ensure that the surface integrity of the implant is not severely affected, in order for the implant to be durable and wear resistant. In the present work, the methodology of designing and machining the femoral component of total knee replacement using a 3-axis Computer Numerical Control (CNC) machine is presented, and then, the results of the machining process, as well as the evaluation of implant surface quality are discussed in detail. At first, a preliminary design of the components of the knee implant is performed and the planning for the production of the femoral component is implemented in Computed Aided Manufacturing (CAM) software. Then, three femoral components are machined under different process conditions and the surface quality is evaluated in terms of surface roughness. Analysis of the results indicated the appropriate process conditions for each part of the implant surface and led to the determination of optimum machining strategy for the finishing stage. View Full-Text
Keywords: femoral component; medical implant; total knee replacement; CNC machining; implant machining; sculptured surface; bio-engineering; surface quality femoral component; medical implant; total knee replacement; CNC machining; implant machining; sculptured surface; bio-engineering; surface quality
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Markopoulos, A.P.; Galanis, N.I.; Karkalos, N.E.; Manolakos, D.E. Precision CNC Machining of Femoral Component of Knee Implant: A Case Study. Machines 2018, 6, 10.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Machines EISSN 2075-1702 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top