SYSTEM FOR ASSISTING A SURGEON DURING THE PERFORMANCE OF A CUT IN A BONE OF A PATIENT

The invention relates to a system for assisting a surgeon during the performance of a cut, such as a sagittal cut, in a bone (2) of a patient. It comprises a first sensor (8) to be arranged on an associated cutting guide (3) placed on the bone (2), the cutting guide defining a desired cutting orientation. It also comprises a second sensor (9) to be arranged on an associated bone-saw (1). The first and second sensors measure the spatial orientation of the cutting guide and a blade (5) of the bone-saw, respectively, and transmit output signals (10,11) representative of the spatial orientations to a receiver (12). Based on the received first and second output signals, the receiver determines a difference (β) between the spatial orientations of the blade and the cutting guide and present an indication of the difference to the surgeon on at least one angle conformity indicator (13).