| 摘要 |
<p>Implantable vertebral prosthesis (10), comprising a first member (11) fixedly attachable to a first vertebra (C1) and a second member (12) fixedly attachable to a second vertebra (C2), the second member (12) comprising a guide (122) arranged for guiding the first member (11) relative to the second member (12) along an arcuate path (123). The arcuate path (123) is so formed, that when the vertebral prosthesis (10) is in use and the first member (11) is attached to the first vertebra (C1) and the second member (12) is attached to the second vertebra (C2), movement of the first member (11) along the guide (122) effects substantially a physiological rotation of the first vertebra relative to the second vertebra. The first member (11) is secured to the second member (12) so as to limit displacement of the first member (11) relative to the second member (12) perpendicularly to the transverse plane to an amount of not more than the physiological flexion and extension of the first vertebra (C1) relative to the second vertebra (C2) in a sagittal plane of the patient when in use.</p> |
