Calibration Markers for Digital Templating in Total Hip Arthroplasty.
Digital templating with external calibration markers is the standard method for planning total hip arthroplasty. We determined the geometrical basis of the magnification effect, compared magnification with external and internal calibration markers, and examined the influence on magnification of the...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2015-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC4500467?pdf=render |
| _version_ | 1818155934757683200 |
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| author | Christoph Kolja Boese Philipp Lechler Leonard Rose Jens Dargel Johannes Oppermann Peer Eysel Hansjörg Geiges Jan Bredow |
| author_facet | Christoph Kolja Boese Philipp Lechler Leonard Rose Jens Dargel Johannes Oppermann Peer Eysel Hansjörg Geiges Jan Bredow |
| author_sort | Christoph Kolja Boese |
| collection | DOAJ |
| description | Digital templating with external calibration markers is the standard method for planning total hip arthroplasty. We determined the geometrical basis of the magnification effect, compared magnification with external and internal calibration markers, and examined the influence on magnification of the position of the calibration markers, patient weight, and body mass index (BMI). A formula was derived to calculate magnification with internal and external calibration markers, informed by 100 digital radiographs of the pelvis. Intraclass correlations between the measured and calculated values and the strength of relationships between magnification, position and distance of calibration markers and height, weight, and BMI were sought. There was a weak correlation between magnification of internal and external calibration markers (r = 0.297-0.361; p < 0.01). Intraclass correlations were 0.882-1.000 (p = 0.000) for all parameters. There were also weak correlations between magnification of internal and external calibration markers and weight and BMI (r = 0.420, p = 0.000; r = 0.428, p = 0.000, respectively). The correlation between external and internal calibration markers was poor, indicating the need for more accurate calibration methods. While weight and BMI weakly correlated with the magnification of markers, future studies should examine this phenomenon in more detail. |
| first_indexed | 2024-12-11T14:50:18Z |
| format | Article |
| id | doaj.art-b83483305a78463c81b7f71669943b0d |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-11T14:50:18Z |
| publishDate | 2015-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-b83483305a78463c81b7f71669943b0d2022-12-22T01:01:29ZengPublic Library of Science (PLoS)PLoS ONE1932-62032015-01-01107e012852910.1371/journal.pone.0128529Calibration Markers for Digital Templating in Total Hip Arthroplasty.Christoph Kolja BoesePhilipp LechlerLeonard RoseJens DargelJohannes OppermannPeer EyselHansjörg GeigesJan BredowDigital templating with external calibration markers is the standard method for planning total hip arthroplasty. We determined the geometrical basis of the magnification effect, compared magnification with external and internal calibration markers, and examined the influence on magnification of the position of the calibration markers, patient weight, and body mass index (BMI). A formula was derived to calculate magnification with internal and external calibration markers, informed by 100 digital radiographs of the pelvis. Intraclass correlations between the measured and calculated values and the strength of relationships between magnification, position and distance of calibration markers and height, weight, and BMI were sought. There was a weak correlation between magnification of internal and external calibration markers (r = 0.297-0.361; p < 0.01). Intraclass correlations were 0.882-1.000 (p = 0.000) for all parameters. There were also weak correlations between magnification of internal and external calibration markers and weight and BMI (r = 0.420, p = 0.000; r = 0.428, p = 0.000, respectively). The correlation between external and internal calibration markers was poor, indicating the need for more accurate calibration methods. While weight and BMI weakly correlated with the magnification of markers, future studies should examine this phenomenon in more detail.http://europepmc.org/articles/PMC4500467?pdf=render |
| spellingShingle | Christoph Kolja Boese Philipp Lechler Leonard Rose Jens Dargel Johannes Oppermann Peer Eysel Hansjörg Geiges Jan Bredow Calibration Markers for Digital Templating in Total Hip Arthroplasty. PLoS ONE |
| title | Calibration Markers for Digital Templating in Total Hip Arthroplasty. |
| title_full | Calibration Markers for Digital Templating in Total Hip Arthroplasty. |
| title_fullStr | Calibration Markers for Digital Templating in Total Hip Arthroplasty. |
| title_full_unstemmed | Calibration Markers for Digital Templating in Total Hip Arthroplasty. |
| title_short | Calibration Markers for Digital Templating in Total Hip Arthroplasty. |
| title_sort | calibration markers for digital templating in total hip arthroplasty |
| url | http://europepmc.org/articles/PMC4500467?pdf=render |
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