Reliability of pelvic parameters measurement with sterEOS: preliminary results

4 pages•Published: October 26, 2019

Aziliz Guezou-Philippe, Guillaume Dardenne, Morgane Dorniol, Hoel Letissier, Christian Lefèvre and Eric Stindel

Abstract

SterEOS is a software developed by EOS Imaging® allowing the measurement of 3D orthopaedic parameters on two bi-planar radiographs. The goal of this preliminary study was to assess the reliability of the pelvic measurements. Two observers, a novice and an intermediate user, measured three times these parameters on pre and postoperative EOS images coming from ten patients. Intra- and inter-observer precision have been evaluated with intra-class coefficient (ICC) and Bland-Altman graphs. On preoperative EOS images, a high intra- and inter-observer precision (ICC>0.8) was obtained for the measurement of the femoral head diameter, the femur length, the pelvic version and the pelvic obliquity. The offset, the femoral neck length, the pelvic incidence and the sacral slope measurement had a high intra-observer precision but a lower inter-observer precision. The measurement of the acetabulum inclination and anteversion, the CCD angle, the femur torsion, the pelvic rotation and the anterior pelvic plane inclination had a low intra- and inter-observer precision. Similar results were found on postoperative EOS images. Our results are partially consistent with the literature since authors found high intra- and inter-observer precision for all pelvic parameters. Further studies are therefore needed to evaluate the impact of the observer experience on the reliability of those measurements.

Keyphrases: pelvic parameters, precision, stereos, total hip arthroplasty

In: Patrick Meere and Ferdinando Rodriguez Y Baena (editors). CAOS 2019. The 19th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery, vol 3, pages 157-160.

Links:	https://easychair.org/publications/paper/Wf8P
	https://doi.org/10.29007/1rd2

BibTeX entry

@inproceedings{CAOS2019:Reliability_pelvic_parameters_measurement,
  author    = {Aziliz Guezou-Philippe and Guillaume Dardenne and Morgane Dorniol and Hoel Letissier and Christian Lefèvre and Eric Stindel},
  title     = {Reliability of pelvic parameters measurement with sterEOS: preliminary results},
  booktitle = {CAOS 2019. The 19th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery},
  editor    = {Patrick Meere and Ferdinando Rodriguez Y Baena},
  series    = {EPiC Series in Health Sciences},
  volume    = {3},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2398-5305},
  url       = {/publications/paper/Wf8P},
  doi       = {10.29007/1rd2},
  pages     = {157-160},
  year      = {2019}}

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