The accuracy of acetabular cup placement in primary total hip arthroplasty using an image-free navigation system

Abstract Background Intraoperative navigation systems have been shown to improve the accuracy of acetabular component insertion in total hip arthroplasty (THA). The purpose of this study was to investigate the accuracy of cup orientation in primary THA using an image-free navigation system. Methods...

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Autores principales:	Yohei Naito, Masahiro Hasegawa, Shine Tone, Hiroki Wakabayashi, Akihiro Sudo
Formato:	article
Lenguaje:	EN
Publicado:	BMC 2021
Materias:	Image-free navigation Total hip arthroplasty Acetabular cup Diseases of the musculoskeletal system RC925-935
Acceso en línea:	https://doaj.org/article/bcc464749796454fb065718dbbe1fd0c
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spelling	oai:doaj.org-article:bcc464749796454fb065718dbbe1fd0c2021-12-05T12:18:20ZThe accuracy of acetabular cup placement in primary total hip arthroplasty using an image-free navigation system10.1186/s12891-021-04902-51471-2474https://doaj.org/article/bcc464749796454fb065718dbbe1fd0c2021-12-01T00:00:00Zhttps://doi.org/10.1186/s12891-021-04902-5https://doaj.org/toc/1471-2474Abstract Background Intraoperative navigation systems have been shown to improve the accuracy of acetabular component insertion in total hip arthroplasty (THA). The purpose of this study was to investigate the accuracy of cup orientation in primary THA using an image-free navigation system. Methods A total of 107 consecutive cementless THAs using an image-free navigation system were performed from February 2017 to March 2020 (the navigation group). As a control group, 77 retrospective consecutive cases who underwent THAs with manual implant-techniques between February 2012 and April 2017 were included. Postoperative cup radiographic inclination and radiographic anteversion relative to the functional pelvic plane were assessed using a 3D-template system after computed tomography (CT) examination. Results The mean absolute errors of the postoperative measured angles from the target angles in inclination were 3.4° ± 3.0° in the navigation group and 8.4° ± 6.6° in the control group (p < 0.001). The mean absolute errors in anteversion were 5.1° ± 3.6° in the navigation group and 10.8° ± 6.5° in the control group (p < 0.001). The percentage of cups inside the Lewinnek safe zone was 93% in the navigation group and 44% in the control group (p < 0.001). The mean absolute values of navigation error were 3.3° ± 2.8° in inclination and 5.8° ± 4.9° in anteversion. Among the cases of osteoarthritis, the inclination error was significantly higher in Crowe group 2 to 4 than in Crowe group 1 (5.1° ± 3.5° and 3.0° ± 2.5°, respectively, p < 0.05). The percentage of hips with inclination error over 10° in Crowe group 2 to 4 was significantly higher than in Crowe group 1 (17 and 1%, respectively, p < 0.05). Conclusions The image-free navigation system improved the accuracy of cup orientation. The accuracy of cup position was less in Crowe group 2 to 4 than in Crowe group 1.Yohei NaitoMasahiro HasegawaShine ToneHiroki WakabayashiAkihiro SudoBMCarticleImage-free navigationTotal hip arthroplastyAcetabular cupDiseases of the musculoskeletal systemRC925-935ENBMC Musculoskeletal Disorders, Vol 22, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Image-free navigation Total hip arthroplasty Acetabular cup Diseases of the musculoskeletal system RC925-935
spellingShingle	Image-free navigation Total hip arthroplasty Acetabular cup Diseases of the musculoskeletal system RC925-935 Yohei Naito Masahiro Hasegawa Shine Tone Hiroki Wakabayashi Akihiro Sudo The accuracy of acetabular cup placement in primary total hip arthroplasty using an image-free navigation system
description	Abstract Background Intraoperative navigation systems have been shown to improve the accuracy of acetabular component insertion in total hip arthroplasty (THA). The purpose of this study was to investigate the accuracy of cup orientation in primary THA using an image-free navigation system. Methods A total of 107 consecutive cementless THAs using an image-free navigation system were performed from February 2017 to March 2020 (the navigation group). As a control group, 77 retrospective consecutive cases who underwent THAs with manual implant-techniques between February 2012 and April 2017 were included. Postoperative cup radiographic inclination and radiographic anteversion relative to the functional pelvic plane were assessed using a 3D-template system after computed tomography (CT) examination. Results The mean absolute errors of the postoperative measured angles from the target angles in inclination were 3.4° ± 3.0° in the navigation group and 8.4° ± 6.6° in the control group (p < 0.001). The mean absolute errors in anteversion were 5.1° ± 3.6° in the navigation group and 10.8° ± 6.5° in the control group (p < 0.001). The percentage of cups inside the Lewinnek safe zone was 93% in the navigation group and 44% in the control group (p < 0.001). The mean absolute values of navigation error were 3.3° ± 2.8° in inclination and 5.8° ± 4.9° in anteversion. Among the cases of osteoarthritis, the inclination error was significantly higher in Crowe group 2 to 4 than in Crowe group 1 (5.1° ± 3.5° and 3.0° ± 2.5°, respectively, p < 0.05). The percentage of hips with inclination error over 10° in Crowe group 2 to 4 was significantly higher than in Crowe group 1 (17 and 1%, respectively, p < 0.05). Conclusions The image-free navigation system improved the accuracy of cup orientation. The accuracy of cup position was less in Crowe group 2 to 4 than in Crowe group 1.
format	article
author	Yohei Naito Masahiro Hasegawa Shine Tone Hiroki Wakabayashi Akihiro Sudo
author_facet	Yohei Naito Masahiro Hasegawa Shine Tone Hiroki Wakabayashi Akihiro Sudo
author_sort	Yohei Naito
title	The accuracy of acetabular cup placement in primary total hip arthroplasty using an image-free navigation system
title_short	The accuracy of acetabular cup placement in primary total hip arthroplasty using an image-free navigation system
title_full	The accuracy of acetabular cup placement in primary total hip arthroplasty using an image-free navigation system
title_fullStr	The accuracy of acetabular cup placement in primary total hip arthroplasty using an image-free navigation system
title_full_unstemmed	The accuracy of acetabular cup placement in primary total hip arthroplasty using an image-free navigation system
title_sort	accuracy of acetabular cup placement in primary total hip arthroplasty using an image-free navigation system
publisher	BMC
publishDate	2021
url	https://doaj.org/article/bcc464749796454fb065718dbbe1fd0c
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The accuracy of acetabular cup placement in primary total hip arthroplasty using an image-free navigation system

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