Reproducibility of pelvic sagittal inclination while acquiring radiographs in supine and standing postures

Journal of Orthopaedic Surgery
Keisuke UemuraNobuhiko Sugano

Abstract

Pelvic position on the sagittal plane is usually evaluated with the pelvic sagittal inclination (PSI) angle from a single radiograph. However, the reproducibility of pelvic positioning has not been investigated, and thus, the validity of measuring the PSI from a single film/time point is not understood. Herein, the reproducibility of a patient's pelvic positions in supine and standing postures was analyzed. A total of 34 patients who underwent either a pelvic osteotomy or total hip arthroplasty were enrolled in this study. Preoperative radiographs in both supine and standing postures were acquired twice (first X-ray and second X-ray) within 6 months; preoperative computed tomography (CT) images of the full pelvis were also acquired in a supine posture (preop-CT). To eliminate measurement variability, each PSI was automatically measured from radiographs and CT images through the use of CT segmentation and landmark localization followed by intensity-based 2D-3D registration. The absolute difference of PSI among each image was calculated and the intra-class correlation coefficient (ICC) in each posture was also analyzed. The median absolute differences of PSI in the supine posture were 1.3° between the first and second X-rays, 1.2...Continue Reading

References

Jun 5, 2003·Clinical Orthopaedics and Related Research·Shunsaku NishiharaHideki Yoshikawa
Oct 1, 2005·Acta Orthopaedica·Burkhard LembeckNikolaus Wuelker
Feb 5, 2008·The Journal of Bone and Joint Surgery. American Volume·Jürgen W BabischLouis-Philippe Amiot
Jun 12, 2013·Orthopedics·Takayuki KyoHidenobu Miki
Oct 1, 2013·The Bone & Joint Journal·W EilanderT Hogervorst
Dec 3, 2014·The Journal of Arthroplasty·Joseph D MarattDavid J Mayman
Feb 13, 2015·Physics in Medicine and Biology·Yoshito OtakeJeffrey H Siewerdsen
Jan 5, 2016·The Journal of Arthroplasty·Chitranjan S RanawatMorteza Meftah
Jan 7, 2016·The Journal of Arthroplasty·Alysen L DemzikDavid W Manning
Feb 6, 2017·The Bone & Joint Journal·J PierrepontA J Shimmin
Apr 11, 2017·The Journal of Arthroplasty·Keisuke UemuraNobuhiko Sugano

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Citations

Jun 3, 2020·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Bita ShareghiJohan Kärrholm

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Methods Mentioned

BETA
total hip arthroplasty
X-ray

Software Mentioned

SPSS
Power

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