Effect of Improved Navigation Performance on the Accuracy of Implant Placement in Total Hip Arthroplasty with a CT-based Navigation System

Overview

Journal J Artif Organs

Specialty Biomedical Engineering

Date 2018 Apr 4

PMID 29611147

Citations 14

Authors

Ichiro Nakahara

Takayuki Kyo

Yasuo Kuroda

Hidenobu Miki

Affiliations

Soon will be listed here.

Abstract

A computed tomography (CT)-based navigation system is one of the support tools to place implant with appropriate alignment and position in total hip arthroplasty (THA). To determine whether the higher performance of the navigation would further improve the accuracy of implant placement in the clinical setting, we retrospectively compared the navigation accuracy of two different versions of a navigation system. The newer version of the navigation system had an upgraded optical sensor with superior positional accuracy. Navigation accuracy, defined as differences between postoperative measurements on CT images and intraoperative records on the navigation system, of 49 THAs performed with the newer version of the navigation system was compared with that of 49 THAs performed with the older version. With the newer version, the mean absolute accuracy (95% limits of agreement) of implant alignment was 1.2° (± 3.3°) for cup inclination, 1.0° (± 2.4°) for cup anteversion, 2.0° (± 4.9°) for stem anteversion, and 1.1° (± 2.4°) for stem valgus angle. The accuracy of the implant position was 1.5 mm (± 3.1 mm), 1.3 mm (± 3.0 mm), and 1.5 mm (± 3.1 mm) for cup x-, y-, and z-axes, respectively, 1.6 mm (± 3.2 mm), 1.4 mm (± 2.9 mm), and 1.5 mm (± 2.7 mm) for stem x-, y-, and z-axes, respectively, and 2.4 mm (± 4.5 mm) for leg length discrepancy. The values for the newer version were significantly more accurate with less variation compared to those of the older version. With upgraded navigation performance, more accurate implant placement was demonstrated in the clinical setting.

Citing Articles

The Accuracy of Cup Placement in Total Hip Arthroplasty (THA) Using an Augmented Reality-Based Navigation System.

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PMID: 38826595 PMC: 11140827. DOI: 10.7759/cureus.59423.

Accuracy of cup placement and pelvic motion in total hip arthroplasty in the lateral decubitus position using a new computed tomography-based navigation system with augmented reality technology.

Naito Y, Hasegawa M, Tone S, Wakabayashi H, Sudo A Arch Orthop Trauma Surg. 2024; 144(5):2381-2389.

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Is bone remodelling around fully hydroxyapatite-coated and tapered-wedge stems related to the stem fixation pattern?.

Ohyama Y, Minoda Y, Masuda S, Sugama R, Ohta Y, Nakamura H Eur J Orthop Surg Traumatol. 2024; 34(4):2041-2047.

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Rigid fixation of pelvic tracker essential for accurate cup placement in CT-based navigation total hip arthroplasty.

Hamawaki M, Hamada H, Uemura K, Takashima K, Mae H, Nakamura N J Artif Organs. 2024; 27(4):403-409.

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Accuracy of augmented reality with computed tomography-based navigation in total hip arthroplasty.

Hasegawa M, Naito Y, Tone S, Sudo A J Orthop Surg Res. 2023; 18(1):662.

PMID: 37674221 PMC: 10481587. DOI: 10.1186/s13018-023-04155-z.

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