Method for monitoring the spatial deviation with respect to a planned surgical procedure

A system comprising a processor, the system characterised by the processor having access to a planned surgical procedure comprising one or more three-dimensional (3D) images corresponding to one or more predefined states of the planned surgical procedure in a body portion, wherein the processor is configured to execute instructions to perform the following steps of a method for monitoring the spatial deviation with respect to a planned surgical procedure:

• d) receiving one or more image of the body portion obtained by an intraoperative imaging device wherein the one or more image is associated to a certain predefined state of the planned surgical procedure;
• e) superimposing the one or more received images of step a) with the corresponding section of the one or more 3D image of the planned surgical procedure associated to the same predefined state;
• and
• f) determining the spatial deviation of the surgical procedure results with respect to the planned surgical procedure from the superimposition of the images of step b);
• wherein the one or more received image of step a) is a computer tomography (CT) image and the body portion comprises at least one bone;
• and
• wherein the planned surgical procedure comprises at least one bone relocation surgery, and wherein the received one or more image of step a) is associated to a certain predefined state of the planned surgical procedure after at least one bone relocation.