Gravity-Assisted Navigation System for Total Hip Arthroplasty

2018 ◽  
pp. 181-191
Author(s):  
Guoyan Zheng
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Navigation System ◽  
Assisted Navigation ◽  
Total Hip

scholarly journals Clinical Validation of Computer-Assisted Navigation in Total Hip Arthroplasty

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Eric Beaumont ◽  
Pierre Beaumont ◽  
Daniel Odermat ◽  
Isabelle Fontaine ◽  
Herbert Jansen ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Navigation System ◽  
Ct Scans ◽  
Computer Assisted ◽  
Clinical Validation ◽  
Clinical Validity ◽  
Assisted Navigation ◽  
Total Hip ◽  
Secondary Objective

A CT-based navigation system is helpful to evaluate the reamer shaft and the impactor position/orientation during unilateral total hip arthroplasty (THA). The main objective of this study is to determine the accuracy of the Navitrack system by measuring the implant's true anteversion and inclination, based on pre- and postoperative CT scans (n=9patients). The secondary objective is to evaluate the clinical validity of measurements based on postop anteroposterior (AP) radiographs for determining the cup orientation. Postop CT-scan reconstructions and postop planar radiographs showed no significant differences in orientation compared to peroperative angles, suggesting a clinical validity of the system. Postoperative AP radiographs normally used in clinic are acceptable to determine the cup orientation, and small angular errors may originate from the patient position on the table.

Measuring leg length and offset with an imageless navigation system during total hip arthroplasty: is it really accurate?

2009 ◽  
Vol 5 (2) ◽  
pp. 192-197 ◽  
Author(s):  
Tobias Renkawitz ◽  
Tibor Schuster ◽  
Thomas Herold ◽  
Holger Goessmann ◽  
Ernst Sendtner ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Navigation System ◽  
Leg Length ◽  
Total Hip ◽  
Imageless Navigation

Comparison of accuracy of cup position using portable navigation versus alignment guide in total hip arthroplasty in supine position

2020 ◽  
pp. 112070002090878 ◽  
Author(s):  
Masanori Okamoto ◽  
Masashi Kawasaki ◽  
Toshiaki Okura ◽  
Satoshi Ochiai ◽  
Hiroyuki Yokoi
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Supine Position ◽  
Navigation System ◽  
Direct Anterior Approach ◽  
Navigation Systems ◽  
Total Hip ◽  
Navigation Group ◽  
Portable Navigation ◽  
Alignment Guide

Background: Accelerometer-based portable navigation systems in supine total hip arthroplasty (THA) have been developed, but there are no reports on the accuracy of cup placement. We aimed to investigate and compare the accuracy of the accelerometer-based portable navigation system versus the acetabular alignment guide placed on the pelvis in THA using the direct anterior approach (DAA). Both devices tracked changes in the pelvic position. Methods: In this single-centre, retrospective study, we reviewed 115 hips in 113 patients who underwent primary THA via the DAA using an accelerometer-based portable navigation system in the supine position (portable navigation group) and 106 hips in 101 patients who underwent THA using an acetabular alignment guide (alignment guide group) as controls. Hips were evaluated postoperatively using computed tomography to measure cup orientation. The accuracy of cup orientation was compared between the 2 groups. Results: Absolute values of inclination error were 3.1° ± 2.2° and 2.9° ± 2.3° ( p = 0.708) in the portable navigation and alignment guide groups and those of anteversion error were 2.8° ± 2.3° and 3.7° ± 2.7°, respectively ( p = 0.005). The number of cups placed within 10° of error was 98.3% and 96.2% in the portable navigation and alignment guide groups, respectively ( p = 0.304). The portable navigation group had significantly more hips (72.2%) placed within a 5° margin of error than did the alignment guide group (56.6%) ( p = 0.016). Conclusion: High accuracy in cup placement was achieved using accelerometer-based portable navigation in supine THA. Using a navigation system may contribute to improved long-term outcomes.

scholarly journals Accuracy of cup orientation and learning curve of the accelerometer-based portable navigation system for total hip arthroplasty in the supine position

2019 ◽  
Vol 27 (2) ◽  
pp. 230949901984887 ◽  
Author(s):  
Tomoyuki Kamenaga ◽  
Shinya Hayashi ◽  
Shingo Hashimoto ◽  
Tomoyuki Matsumoto ◽  
Koji Takayama ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Learning Curve ◽  
Hip Arthroplasty ◽  
Supine Position ◽  
Navigation System ◽  
Total Hip ◽  
Portable Navigation

Trends in cup position utilizing computer-assisted navigation during total hip arthroplasty

2020 ◽  
Vol 31 (3) ◽  
pp. 211-217
Author(s):  
Rachel R. Mays ◽  
Jessica R. Benson ◽  
Jeffrey M. Muir ◽  
Morteza Meftah
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Computer Assisted ◽  
Assisted Navigation ◽  
Total Hip ◽  
Cup Position
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