Pose Estimation of Periacetabular Osteotomy Fragments With Intraoperative X-Ray Navigation.

ABSTRACT:

Objective

State-of-the-art navigation systems for pelvic osteotomies use optical systems with external fiducials. In this paper, we propose the use of X-ray navigation for pose estimation of periacetabular fragments without fiducials.

Methods

A two-dimensional/three-dimensional (2-D/3-D) registration pipeline was developed to recover fragment pose. This pipeline was tested through an extensive simulation study and six cadaveric surgeries. Using osteotomy boundaries in the fluoroscopic images, the preoperative plan was refined to more accurately match the intraoperative shape.

Results

In simulation, average fragment pose errors were 1.3 ^° /1.7 mm when the planned fragment matched the intraoperative fragment, 2.2 ^° /2.1 mm when the plan was not upd

SUBMITTER: Grupp RB 

PROVIDER: S-EPMC7297497 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature