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. 2018 May 23;46(10):1595–1605. doi: 10.1007/s10439-018-2055-1

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© Biomedical Engineering Society 2018

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.

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Scatter plots of the entry points and angular errors of the three groups. (a)–(c) Projections of the entry points of Author, Author + Obstacle and Volunteers groups on the plane perpendicular to the planned drilling direction. The origin is the planned entry point. The dashed circle is the positional threshold for AR guidance. The solid red circle represents the femoral neck diameter, which is 31 mm. (d)–(f) Inclination and version errors for Author, Author + Obstacle and Volunteers groups. The dashed circle is the directional threshold for AR guidance.