A complete-pelvis segmentation framework for image-free total hip arthroplasty (THA)

• Verfasst von: Xie, Weiguo [VerfasserIn]
• Verfasst von: Franke, Jochen [VerfasserIn]
• Verfasst von: Grützner, Paul Alfred [VerfasserIn]
• Titel: A complete-pelvis segmentation framework for image-free total hip arthroplasty (THA)
• Titelzusatz: methodology and clinical study
• Verf.angabe: Weiguo Xie, Jochen Franke, Cheng Chen, Paul A. Grützner, Steffen Schumann, Lutz-P. Nolte, Guoyan Zheng
• Jahr: 2015
• Jahr des Originals: 2014
• Umfang: 15 S.
• Fussnoten: Published online: 26 September 2014 ; Gesehen am 06.04.2017
• Titel Quelle: Enthalten in: The international journal of medical robotics and computer assisted surgery
• Ort Quelle: Chichester : Wiley, 2004
• Jahr Quelle: 2015
• Band/Heft Quelle: 11(2015), 2, Seite 166-180
• ISSN Quelle: 1478-596X
• DOI: doi:10.1002/rcs.1619
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: acetabular cup orientation
• Sach-SW: computer-assisted orthopaedic surgery
• Sach-SW: image-free total hip arthroplasty
• Sach-SW: radiograph segmentation
• Sach-SW: statistical model
• K10plus-PPN: 1556361432

Abstract

Background: Complete-pelvis segmentation in antero-posterior pelvic radiographs is required to create a patient-specific three-dimensional pelvis model for surgical planning and postoperative assessment in image-free navigation of total hip arthroplasty. Methods: A fast and robust framework for accurately segmenting the complete pelvis is presented, consisting of two consecutive modules. In the first module, a three-stage method was developed to delineate the left hemi-pelvis based on statistical appearance and shape models. To handle complex pelvic structures, anatomy-specific information processing techniques were employed. As the input to the second module, the delineated left hemi-pelvis was then reflected about an estimated symmetry line of the radiograph to initialize the right hemi-pelvis segmentation. The right hemi-pelvis was segmented by the same three-stage method. Results: Two experiments conducted on respectively 143 and 40 AP radiographs demonstrated a mean segmentation accuracy of 1.61±0.68 mm. A clinical study to investigate the postoperative assessment of acetabular cup orientations based on the proposed framework revealed an average accuracy of 1.2°±0.9° and 1.6°±1.4° for anteversion and inclination, respectively. Delineation of each radiograph costs less than one minute. Conclusions: Despite further validation needed, the preliminary results implied the underlying clinical applicability of the proposed framework for image-free THA. Copyright © 2014 John Wiley & Sons, Ltd.