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The Glenoid Vault Outer Cortex a new more accurate radiological reference for shoulder arthroplasty

Introduction: Correct positioning of the glenoid component is an important determinant of outcome in shoulder arthroplasty. We describe and assess a new radiological plane of reference for improving the accuracy of glenoid preparation prior to component implantation – the Glenoid Vault Outer Cortex...

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Autores principales: Hurst, Simon A., Merlini, Lorenzo, Hansen, Ulrich, Gregory, Jules, Emery, Roger, Gregory, Thomas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: EDP Sciences 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8132599/
https://www.ncbi.nlm.nih.gov/pubmed/34009116
http://dx.doi.org/10.1051/sicotj/2021030
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author Hurst, Simon A.
Merlini, Lorenzo
Hansen, Ulrich
Gregory, Jules
Emery, Roger
Gregory, Thomas
author_facet Hurst, Simon A.
Merlini, Lorenzo
Hansen, Ulrich
Gregory, Jules
Emery, Roger
Gregory, Thomas
author_sort Hurst, Simon A.
collection PubMed
description Introduction: Correct positioning of the glenoid component is an important determinant of outcome in shoulder arthroplasty. We describe and assess a new radiological plane of reference for improving the accuracy of glenoid preparation prior to component implantation – the Glenoid Vault Outer Cortex (GvOC) plane. Methods: One hundred and five CT scans of normal scapulae were obtained. Forty six females and 59 males aged between 22 and 30 years. The accuracy of the GvOC plane was then compared against the current “gold standard” – the scapular border (SB). Measurements of glenoid inclination, version, rotation, and offset were obtained using both the GvOC and SB planes. These were then compared to actual values. Results: The mean difference between version obtained using the GvOC plane and the actual value was 1.8° (−2 to 5, SD 1.6) as compared to 6.7° (−2 to 17, SD 4.3) when the SB plane was used, (p < 0.001). The mean difference between estimates of inclination obtained using the GvOC plane and the actual were 1.9° (−4 to 6, SD 1.6) as compared to 11.2° (−4 to 25, SD 6.1) when the SB plane was used, (p < 0.001). Conclusions: The GvOC plane produced estimates of glenoid version and inclination closer to actual values with lower variance than when the SB plane was used. The GvOC may be a more accurate and reproducible radiological method for surgeons to use when defining glenoid anatomy prior to arthroplasty surgery.
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spelling pubmed-81325992021-05-24 The Glenoid Vault Outer Cortex a new more accurate radiological reference for shoulder arthroplasty Hurst, Simon A. Merlini, Lorenzo Hansen, Ulrich Gregory, Jules Emery, Roger Gregory, Thomas SICOT J Original Article Introduction: Correct positioning of the glenoid component is an important determinant of outcome in shoulder arthroplasty. We describe and assess a new radiological plane of reference for improving the accuracy of glenoid preparation prior to component implantation – the Glenoid Vault Outer Cortex (GvOC) plane. Methods: One hundred and five CT scans of normal scapulae were obtained. Forty six females and 59 males aged between 22 and 30 years. The accuracy of the GvOC plane was then compared against the current “gold standard” – the scapular border (SB). Measurements of glenoid inclination, version, rotation, and offset were obtained using both the GvOC and SB planes. These were then compared to actual values. Results: The mean difference between version obtained using the GvOC plane and the actual value was 1.8° (−2 to 5, SD 1.6) as compared to 6.7° (−2 to 17, SD 4.3) when the SB plane was used, (p < 0.001). The mean difference between estimates of inclination obtained using the GvOC plane and the actual were 1.9° (−4 to 6, SD 1.6) as compared to 11.2° (−4 to 25, SD 6.1) when the SB plane was used, (p < 0.001). Conclusions: The GvOC plane produced estimates of glenoid version and inclination closer to actual values with lower variance than when the SB plane was used. The GvOC may be a more accurate and reproducible radiological method for surgeons to use when defining glenoid anatomy prior to arthroplasty surgery. EDP Sciences 2021-05-19 /pmc/articles/PMC8132599/ /pubmed/34009116 http://dx.doi.org/10.1051/sicotj/2021030 Text en © The Authors, published by EDP Sciences, 2021 https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0 (https://creativecommons.org/licenses/by/4.0/) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Hurst, Simon A.
Merlini, Lorenzo
Hansen, Ulrich
Gregory, Jules
Emery, Roger
Gregory, Thomas
The Glenoid Vault Outer Cortex a new more accurate radiological reference for shoulder arthroplasty
title The Glenoid Vault Outer Cortex a new more accurate radiological reference for shoulder arthroplasty
title_full The Glenoid Vault Outer Cortex a new more accurate radiological reference for shoulder arthroplasty
title_fullStr The Glenoid Vault Outer Cortex a new more accurate radiological reference for shoulder arthroplasty
title_full_unstemmed The Glenoid Vault Outer Cortex a new more accurate radiological reference for shoulder arthroplasty
title_short The Glenoid Vault Outer Cortex a new more accurate radiological reference for shoulder arthroplasty
title_sort glenoid vault outer cortex a new more accurate radiological reference for shoulder arthroplasty
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8132599/
https://www.ncbi.nlm.nih.gov/pubmed/34009116
http://dx.doi.org/10.1051/sicotj/2021030
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