Open AccessAugmented reality‐based navigation system applied to tibial bone resection in total knee arthroplasty
Author(s) -
Tsukada Sachiyuki,
Ogawa Hiroyuki,
Nishino Masahiro,
Kurosaka Kenji,
Hirasawa Naoyuki
Publication year - 2019
Publication title -
journal of experimental orthopaedics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 18
ISSN - 2197-1153
DOI - 10.1186/s40634-019-0212-6
Subject(s) - valgus , coronal plane , sagittal plane , medicine , total knee arthroplasty , calipers , orthopedic surgery , computer assisted surgery , orthodontics , resection , tibia , navigation system , surgery , radiology , computer science , mathematics , artificial intelligence , geometry
Background This pilot study was performed to examine the accuracy of the AR‐KNEE system, an imageless navigation system using augmented reality (AR) technology for total knee arthroplasty. The AR‐KNEE system enables the surgeon to view information from the navigation superimposed on the surgical field on a smartphone screen in real time. Methods Using the AR‐KNEE system, one surgeon resected 10 tibial sawbones with viewing the tibial axis and aiming varus/valgus, posterior slope, internal/external rotation angles, and resection level superimposed on the surgical field. We performed computed tomography of the resected sawbones and measured the varus/valgus, posterior slope, and internal/external rotation angles using a designated computer software. The thickness of the resected bone was measured using digital calipers. Results The absolute differences between the values displayed on the smartphone screen and the measurement values for varus/valgus, posterior slope, internal/external rotation angles, and thickness of the resected bone were 0.5° ± 0.2°, 0.8° ± 0.9°, 1.8° ± 1.5°, and 0.6 mm ± 0.7 mm, respectively. Conclusions This pilot study using sawbones suggested that the AR‐KNEE system may provide reliable accuracy for coronal, sagittal, and rotational alignment in tibial bone resection during total knee arthroplasty.