Technical note: an augmented reality system for total hip arthroplasty

Javad Fotouhi; Clayton P. Alexander; Mathias Unberath; Giacomo Taylor; Sing Chun Lee; Bernhard Fuerst; Alex Johnson; Greg Osgood; Russell H. Taylor; Harpal Khanuja; Nassir Navab; Mehran Armand

doi:10.1117/12.2322399

13 March 2018 Technical note: an augmented reality system for total hip arthroplasty

Javad Fotouhi, Clayton P. Alexander, Mathias Unberath, Giacomo Taylor, Sing Chun Lee, Bernhard Fuerst, Alex Johnson, Greg Osgood, Russell H. Taylor, Harpal Khanuja, Nassir Navab, Mehran Armand

Author Affiliations +

Proceedings Volume 10576, Medical Imaging 2018: Image-Guided Procedures, Robotic Interventions, and Modeling; 105760J (2018) https://doi.org/10.1117/12.2322399
Event: SPIE Medical Imaging, 2018, Houston, Texas, United States

Abstract

Proper implant alignment is a critical step in total hip arthroplasty (THA) procedures. In current practice, correct alignment of the acetabular cup is verified in C-arm X-ray images that are acquired in an anteriorposterior (AP) view. Favorable surgical outcome is, therefore, heavily dependent on the surgeon’s experience in understanding the 3D orientation of a hemispheric implant from 2D AP projection images. This work proposes an easy to use intra-operative component planning system based on two C-arm X-ray images that is combined with 3D augmented reality (AR) visualization that simplifies impactor and cup placement according to the planning by providing a real-time RGBD data overlay. We evaluate the feasibility of our system in a user study comprising four orthopedic surgeons at the Johns Hopkins Hospital, and also report errors in translation, anteversion, and abduction as low as 1.98 mm, 1.10°, and 0.53°, respectively. The promising performance of this AR solution shows that deploying this system could eliminate the need for excessive radiation, simplify the intervention, and enable reproducibly accurate placement of acetabular implants.

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Javad Fotouhi, Clayton P. Alexander, Mathias Unberath, Giacomo Taylor, Sing Chun Lee, Bernhard Fuerst, Alex Johnson, Greg Osgood, Russell H. Taylor, Harpal Khanuja, Nassir Navab, and Mehran Armand "Technical note: an augmented reality system for total hip arthroplasty", Proc. SPIE 10576, Medical Imaging 2018: Image-Guided Procedures, Robotic Interventions, and Modeling, 105760J (13 March 2018); https://doi.org/10.1117/12.2322399

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