Smartphone-based navigation system enables low-volume surgeons to perform accurate acetabular cup placement: A single-center retrospective study

Journal of Joint Surgery and Research Pub Date : 2023-12-01 DOI:10.1016/j.jjoisr.2023.11.001

Chihiro Hiraoka , Tatsuhiko Kutsuna , Tomofumi Kinoshita , Ryosuke Nishimura , Satoru Otowa , Yuji Mandai , Masaki Takao

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引用次数: 0

Abstract

Purpose

Using navigation systems during total hip arthroplasty (THA) has been reported to be useful for preventing acetabular cup malpositioning. However, only few studies have reported on the application of navigation systems to THA at low-volume hospitals owing to cost and usage complexity. Therefore, the aim of this study was to determine whether smartphone-based portable navigation using augmented reality technology would enable low-volume surgeons to perform acetabular cup placement more accurately than with the conventional manual technique.

Methods

We retrospectively compared acetabular cup placement between the navigation (n = 28) and conventional (n = 24) groups. The acetabular cup inclination and anteversion angles were measured using computed tomography (CT)-based planning software. Furthermore, the absolute difference between the postoperative and target angles was compared between the groups.

Results

The absolute difference between the postoperative and target angles of cup inclination was 2.6° ± 2.3° in the navigation group and 5.6° ± 5.2° in the conventional group (p < 0.01). Additionally, the cup anteversion was 3.2° ± 3.0° in the navigation group and 9.4° ± 7.1° in the conventional group (p < 0.01).

Conclusions

Using a smartphone-based portable navigation system could allow for appropriate cup placement even by low-volume surgeons.

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基于智能手机的导航系统使小容量外科医生能够精确地放置髋臼杯:一项单中心回顾性研究

目的在全髋关节置换术(THA)中使用导航系统有助于预防髋臼杯错位。然而，由于成本和使用复杂性，很少有研究报道导航系统在小容量医院的THA应用。因此，本研究的目的是确定使用增强现实技术的基于智能手机的便携式导航是否能够使小容量外科医生比传统的手动技术更准确地进行髋臼杯置入。方法回顾性比较导航组(n = 28)和常规组(n = 24)的髋臼杯放置情况。采用基于计算机断层扫描(CT)的规划软件测量髋臼杯倾角和前倾角。进一步比较两组术后与靶角的绝对差值。结果导航组术后杯倾角与靶角的绝对差值为2.6°±2.3°，常规组为5.6°±5.2°(p <0.01)。此外，导航组的杯前倾为3.2°±3.0°，常规组为9.4°±7.1°(p <0.01)。结论使用基于智能手机的便携式导航系统，即使是小容量的外科医生也可以适当地放置杯子。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Joint Surgery and Research

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