Track-plate carriage system
a carriage system and track plate technology, applied in the field of fixing systems, can solve the problems of increasing the attachment alternatives of the fasteners, subsidence may tend to shift more spinal load to the plate than the spinal load, and load shifting can occur, so as to facilitate the bending of the first plate
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[0076] The plates described herein may be used in spinal fusion procedures in which a damaged or diseased disc (or part of a disc) is removed from between a pair of vertebrae and a spinal fusion spacer is placed between the vertebrae. The plates may be applied to an anterior portion of the affected vertebrae to span the affected disc space, and may be fixed to the vertebrae using bone screws. The plate may function to maintain the vertebrae aligned during the initial period following fixation in which fusion of the spacer to the adjacent vertebrae occurs. The plate may also function to share some of the axial spinal load applied to the fusion spacer to prevent extreme subsidence of the spacer into the vertebral body, such as where the patient has poor bone quality. The plates may also act to prevent the spacer from being expelled from the disc space during the initial post-operative period.
[0077] The plates may be used for single level (i.e. one-disc) or multiple-level (i.e. multip...
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