Accurate knowledge of joint kinematics is fundamental for research and clinical purposes. Radiologic based joint kinematic estimation technique have been recently used to study intact joint in-vivo kinematics. Bi-planar methods are more accurate but expensive and invasive, while mono-planar ones are less reliable but more suitable for the clinical practice. The present work is a comparison of mono- and bi-planar fluoroscopic methods using the marker based Roentgen stereophotogrammetric analysis as gold-standard. Five repetitions of a simulated walking task with bone phantoms were analyzed. The dominant source of error for the bi-planar method was the longitudinal symmetry of the bones. The mono-planar technique was limited in the estimation of the out-of-plane pose parameters, but as good as bi-planar for the in-plane pose parameters. With error of the order of the millimeter and the degree, mono-planar fluoroscopy could be sufficient for clinical analysis, provided that it relies upon the most reliable information and avoiding the out-of-plane transaltion.

QUANTIFICATION OF THE PERFORMANCE OF MONO- AND BI-PLANAR 3D FLUOROSCOPY COMPARED TO MARKER-BASED RSA

TERSI, LUCA;FANTOZZI, SILVIA;STAGNI, RITA
2011

Abstract

Accurate knowledge of joint kinematics is fundamental for research and clinical purposes. Radiologic based joint kinematic estimation technique have been recently used to study intact joint in-vivo kinematics. Bi-planar methods are more accurate but expensive and invasive, while mono-planar ones are less reliable but more suitable for the clinical practice. The present work is a comparison of mono- and bi-planar fluoroscopic methods using the marker based Roentgen stereophotogrammetric analysis as gold-standard. Five repetitions of a simulated walking task with bone phantoms were analyzed. The dominant source of error for the bi-planar method was the longitudinal symmetry of the bones. The mono-planar technique was limited in the estimation of the out-of-plane pose parameters, but as good as bi-planar for the in-plane pose parameters. With error of the order of the millimeter and the degree, mono-planar fluoroscopy could be sufficient for clinical analysis, provided that it relies upon the most reliable information and avoiding the out-of-plane transaltion.
Proceedings of ISB
1
2
Luca Tersi; Arnaud Barré; Silvia Fantozzi; Kamiar Aminian; Rita Stagni
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/104306
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact