Proposal of accurate cup placement procedure during total hip arthroplasty based on pelvic tilt discrepancies in the lateral position

Abstract By combining the anatomical-pelvic-plane (APP) positioner with a newly improved navigation system during total hip arthroplasty (THA), it is theoretically possible to determine cup orientation based on the APP while tracking pelvic movement. The purpose of this study was to determine the na...

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Autores principales:	Manabu Tsukamoto, Makoto Kawasaki, Hitoshi Suzuki, Teruaki Fujitani, Akinori Sakai
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c33ebd1aa2c449a0935f23cfac7b7aee
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spelling	oai:doaj.org-article:c33ebd1aa2c449a0935f23cfac7b7aee2021-12-02T16:15:06ZProposal of accurate cup placement procedure during total hip arthroplasty based on pelvic tilt discrepancies in the lateral position10.1038/s41598-021-93418-y2045-2322https://doaj.org/article/c33ebd1aa2c449a0935f23cfac7b7aee2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93418-yhttps://doaj.org/toc/2045-2322Abstract By combining the anatomical-pelvic-plane (APP) positioner with a newly improved navigation system during total hip arthroplasty (THA), it is theoretically possible to determine cup orientation based on the APP while tracking pelvic movement. The purpose of this study was to determine the navigation accuracy and whether the error is related to the pelvic position fixed by the positioner. Fifty hips that underwent primary THA between 2018 and 2020 were analysed. The accuracy was 2.34° at radiographic inclination (RI) and − 5.01° at radiographic anteversion (RA), and the error was within 10° at both RI and RA in only 40 of 50 hips (80.0%). The discrepancy in pelvic sagittal tilt was correlated with the cup orientation error and especially strongly correlated with the RA error (r = − 0.751, p < 0.001). When RI and RA were calculated using a correction formula to determine the true cup orientation based on the pelvic tilt discrepancies, the error in both RI and RA was within 10° in all cases (100%). The navigation accuracy is related to the pelvic position fixed by the positioner, and the correction formula for the target angle that considers pelvic tilt discrepancies can lead to accurate cup placement in the future.Manabu TsukamotoMakoto KawasakiHitoshi SuzukiTeruaki FujitaniAkinori SakaiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Manabu Tsukamoto Makoto Kawasaki Hitoshi Suzuki Teruaki Fujitani Akinori Sakai Proposal of accurate cup placement procedure during total hip arthroplasty based on pelvic tilt discrepancies in the lateral position
description	Abstract By combining the anatomical-pelvic-plane (APP) positioner with a newly improved navigation system during total hip arthroplasty (THA), it is theoretically possible to determine cup orientation based on the APP while tracking pelvic movement. The purpose of this study was to determine the navigation accuracy and whether the error is related to the pelvic position fixed by the positioner. Fifty hips that underwent primary THA between 2018 and 2020 were analysed. The accuracy was 2.34° at radiographic inclination (RI) and − 5.01° at radiographic anteversion (RA), and the error was within 10° at both RI and RA in only 40 of 50 hips (80.0%). The discrepancy in pelvic sagittal tilt was correlated with the cup orientation error and especially strongly correlated with the RA error (r = − 0.751, p < 0.001). When RI and RA were calculated using a correction formula to determine the true cup orientation based on the pelvic tilt discrepancies, the error in both RI and RA was within 10° in all cases (100%). The navigation accuracy is related to the pelvic position fixed by the positioner, and the correction formula for the target angle that considers pelvic tilt discrepancies can lead to accurate cup placement in the future.
format	article
author	Manabu Tsukamoto Makoto Kawasaki Hitoshi Suzuki Teruaki Fujitani Akinori Sakai
author_facet	Manabu Tsukamoto Makoto Kawasaki Hitoshi Suzuki Teruaki Fujitani Akinori Sakai
author_sort	Manabu Tsukamoto
title	Proposal of accurate cup placement procedure during total hip arthroplasty based on pelvic tilt discrepancies in the lateral position
title_short	Proposal of accurate cup placement procedure during total hip arthroplasty based on pelvic tilt discrepancies in the lateral position
title_full	Proposal of accurate cup placement procedure during total hip arthroplasty based on pelvic tilt discrepancies in the lateral position
title_fullStr	Proposal of accurate cup placement procedure during total hip arthroplasty based on pelvic tilt discrepancies in the lateral position
title_full_unstemmed	Proposal of accurate cup placement procedure during total hip arthroplasty based on pelvic tilt discrepancies in the lateral position
title_sort	proposal of accurate cup placement procedure during total hip arthroplasty based on pelvic tilt discrepancies in the lateral position
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c33ebd1aa2c449a0935f23cfac7b7aee
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Proposal of accurate cup placement procedure during total hip arthroplasty based on pelvic tilt discrepancies in the lateral position

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