A method for acquiring the position of points for navigated surgery, the method being constituted to be executed by a computer and comprising the following steps: - acquiring, on the basis of detecting a first tracked device, first point position data for each of at least two points, wherein the first point position data comprise point position information describing the three-dimensional position of the at least two points within a first co-ordinate system (P) assigned to the first tracked device; - acquiring first co-ordinate transformation data for each of the at least two points, wherein the first co-ordinate transformation data comprise co-ordinate transformation information describing a transformation of the three-dimensional position of the at least two points from the first co-ordinate system (P) to a second co-ordinate system (C) assigned to a camera array of a medical tracking system which remains spatially invariant relative to the surgical operating area at least for a time span required for determining the position of each of the at least two points within the third co-ordinate system (R); - acquiring second co-ordinate transformation data for each of the at least two points, wherein the second co-ordinate transformation data comprise co-ordinate transformation information describing a transformation of the three-dimensional position of the at least two points from the second co-ordinate system (C) to a third co-ordinate system (R) assigned to a second tracked device attached to an anatomical structure comprising the at least two points, and - determining, on the basis of the first and second co-ordinate transformation data, second point position data for each of the at least two points, wherein the second point position data comprise point position information describing the three-dimensional position of the at least two points within the third co-ordinate system (R), characterised in that a common transformation matrix is calculated from the second co-ordinate transformation data and the three-dimensional positions of all of the at least two points are transferred from the second co-ordinate system (C) to the third co-ordinate system (R) on the basis of the common transformation matrix. - acquiring, on the basis of detecting a first tracked device, first point position data for each of at least two points, wherein the first point position data comprise point position information describing the three-dimensional position of the at least two points within a first co-ordinate system (P) assigned to the first tracked device; - acquiring first co-ordinate transformation data for each of the at least two points, wherein the first co-ordinate transformation data comprise co-ordinate transformation information describing a transformation of the three-dimensional position of the at least two points from the first co-ordinate system (P) to a second co-ordinate system (C) assigned to a camera array of a medical tracking system which remains spatially invariant relative to the surgical operating area at least for a time span required for determining the position of each of the at least two points within the third co-ordinate system (R); - acquiring second co-ordinate transformation data for each of the at least two points, wherein the second co-ordinate transformation data comprise co-ordinate transformation information describing a transformation of the three-dimensional position of the at least two points from the second co-ordinate system (C) to a third co-ordinate system (R) assigned to a second tracked device attached to an anatomical structure comprising the at least two points, and - determining, on the basis of the first and second co-ordinate transformation data, second point position data for each of the at least two points, wherein the second point position data comprise point position information describing the three-dimensional position of the at least two points within the third co-ordinate system (R), <EOS>