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. 2019 Nov 14;14:364. doi: 10.1186/s13018-019-1428-y

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — The measurement of residual displacement. The measurement of step (of 2.04 mm) is obtained by the difference between the distance from the most displaced fragment to the centre (of 24.91 mm) of the circle template and the radius of the circle template (of 22.87 mm) (a). The gap displacement (of 5.69 mm) is measured in-line with a digital circular template created to match the intact (or largest) portion of the acetabular dome (b)