| 摘要 |
A system for aligning a material-abrading tool (56, 58) relative to an intervertebral-disc compartment at the start of an intervertebral-disc operation comprises an operating table (12), which is capable of being tilted about its longitudinal axis (14), and an image-recording device (22) for recording lateral images of the intervertebral-disc compartment. The tool (56, 58) is capable of being fastened to a reference frame (20), which is arranged above the operating table (12), in a defined relative position with respect to the reference frame (20). Farthermore, the reference frame (20) is capable of being tilted about a tilt axis parallel to the longitudinal axis (14) of the operating table (12). The system comprises, in addition, an alignment element (30) which is rigidly connected to the reference frame (20) and at the same time capable of being registered with the intervertebral-disc compartment by the image-recording device (22).
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