| 摘要 |
The invention relates to a method for measuring displacements of a vertebral column having a segment (2) comprising at least one vertebra having a body delimited by an upper vertebral end plate and a lower vertebral end plate, and each vertebra of the segment (2) having an associated location marker (M2 to M4) attached to same and providing an orientation of the location marker (M2 to M4) to a location system (8), the method comprising: detecting initial orientations of the location markers (M2 to M4); determining, for each vertebra, an initial orientation of a vertebral plane parallel to at least one vertebral end plate; detecting, for each vertebra, the current orientation of the location marker (M2 to M4) associated with the vertebra; and calculating, for each vertebra, the current orientation of the vertebral plane of the vertebra from the current orientation of the associated location marker (M2 to M4) and a geometric transformation associated with the vertebra. |
