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Posterior spinal arthroplasty-development of a new posteriorly inserted artificial disc, a new anteriorly inserted artifical disc and an artificial facet joint
Posterior spinal arthroplasty-development of a new posteriorly inserted artificial disc, a new anteriorly inserted artifical disc and an artificial facet joint
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机译：脊柱后路置换术-一种新的后部插入人工椎间盘，新的前部插入人工椎间盘和一个人造小关节的发展
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摘要
A lumbar disc prosthesis is provided including a pair of disc members. The first member of the disc pair has a vertebral disc contact surface and a recessed portion on an opposing surface thereof. The second member of the disc pair has a vertebral disc contact surface and a protruding portion on an opposing surface thereof. The protruding portion of the second member engages with the recessed portion of the first member in use. Each of the first and second disc members are provided with at least three sections; a middle section and two end sections. The recessed and protruding portions are provided in the middle section of the respective disc members and each of the two end sections have a narrowing taper towards the ends of the disc members. The facet joint prosthesis includes a first member for attachment to a first posterior lumbar disc in use and a second member for attachment to a second posterior lumbar disc in use. At least a part of the first member is telescopically mounted in at least a part of the second member in use.
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