Uncertainty of reference frames characterized by real time optical measurements: Application to Computer Assisted Orthopaedic Surgery

Jean-Marc Linares (1) , Jean-Michel Sprauel (1) , P. Bourdet (2)

1 ISM - Institut des Sciences du Mouvement Etienne Jules Marey
2 ENS Cachan - École normale supérieure - Cachan

In total knee arthroplasty (TKA), real time optical measurements are now carried out to improve the implantation of prostheses. The final alignment of prostheses is however influenced by the choice of points probed by the surgeon, and by the measurement accuracy. A Monte Carlo method has been developed, to simulate a whole set of measurements. To estimate the uncertainties of the resultant angles between the two parts of the knee prosthesis, this data has then been treated with the algorithms implemented in Computer Assisted Orthopaedic Surgery programs. Such results were also obtained through uncertainty propagations based on the GUM.

Keywords: Uncertainty; Geometric modelling; Computer Assisted Orthopaedic Surgery (CAOS)

Domains: Engineering Sciences [physics]; Optics / Photonic

Jean-Marc Linares, Jean-Michel Sprauel, P. Bourdet. Uncertainty of reference frames characterized by real time optical measurements: Application to Computer Assisted Orthopaedic Surgery. CIRP Annals - Manufacturing Technology, 2009, 58 (1), pp.447 - 450. ⟨10.1016/j.cirp.2009.03.008⟩. ⟨hal-01426919⟩