. 2016 Sep 18;7(9):539–545. doi: 10.5312/wjo.v7.i9.539
©The Author(s) 2016. Published by Baishideng Publishing Group Inc. All rights reserved.
This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial.
Figure 4.
Cast spacers. Cast spacers with four different size settings (3, 6, 9 and 12 mm).