Automatic Estimation of Angle and Offset Deviations in Bone Planar Cuts

FEDERICO MILANO; LUCAS RITACCO; GERMÁN FARFALLI; LUIS APONTE TINAO; FERNÁN GONZÁLEZ BERNALDO DEL QUIRÓS; MARCELO RISK

San Francisco, CA

Conferencia; Orthopaedic Research Society Annual Meeting 2012; 2012

Orthopaedic Research Society

Surgical planning followed by computer-assisted intraoperative navigation in orthopaedics oncology for tumor resection have given good results in the last five years. However, it is still not clear how to quantify the discrepancies between what is planned and what is actually executed during the surgery. Our purpose is to develop and validate a method capable of estimating the angle and offset deviation between the planned resection plane and the one executed. The estimation algorithm uses as inputs a computer tomographic (CT) scan of the resected surgical specimen and the planned resection plane. The validation is performed with a custom computer application that allows to create and position resection planes over the executed resection region. Orthopaedics oncology surgeons use this application to set a ground truth that is compared against the automatic estimation.