摘要:
A bone fastener includes a head, an elongated shank defining a longitudinal axis having a proximal end and a distal end. The proximal end is connected to the head and the elongated shank has an inner surface defining a longitudinal cavity disposed along the longitudinal axis and at least one transverse cavity positioned in the elongated shank. The inner surface defining the transverse cavity and the elongated cavity as well as the outer surface of the elongated shank has bone conductive material disposed thereon so as to promote bone growth into the transverse cavities, elongated cavity and on the surface of the elongated shank in order to secure the bone fastener to bone. The distal end of the bone fastener can be configured to have cutting features that cut into bone and self-pack the elongated cavity with autograft material as it is inserted into bone.
摘要:
A vertebral construct comprises a longitudinal element extending between a first end and a second end. The longitudinal element defines a central axis. A first spacer is mounted to the longitudinal element. A second spacer is mounted to the longitudinal element. A flexible element is disposed about the longitudinal element and between the first spacer and the second spacer. The flexible element defines a central axis offset from the central axis of the longitudinal element. Methods of use are disclosed.
摘要:
A spinal implant comprising a first component, a second component and a core component is disclosed. The first component comprises a first exterior surface configured for engaging a first vertebra and a first interior surface opposing the first exterior surface. The second component comprises a second exterior surface configured for engaging a second vertebra and a second interior surface opposing the second exterior surface. The core component is situated between the first and second components and adhered to the first interior surface and the second interior surface, wherein at least one of the first interior surface and the second interior surface comprises a concavity such that at the location of the concavity, the core component comprises a corresponding convexity. Further, the core component may further comprise a sidewall, wherein the sidewall comprises a concavity.
摘要:
An implant assembly and a method of assembling the same are provided, the implant assembly including a receiver extending along a central longitudinal axis between a proximal end and an opposite distal end, the receiver including a distal portion defining a receptacle opening at the distal end and a pair of arms extending from the distal portion along the central longitudinal axis on opposite sides of a passage with the passage opening at opposite sides of the receiver, a bone anchor including a distal bone engaging portion and a head at a proximal end of the distal bone engaging portion, the head being positioned in the receptacle with the bone engaging portion in a selected orientation relative to the central longitudinal axis of the receiver and a connector member configured to form a rigid interface between the receiver and the head of the bone anchor thereby providing torque transfer throughout the implant assembly.
摘要:
A collar for extenders and an extender assembly including a collar is disclosed. The collar is configured to receive extenders and maintain the extenders in a parallel orientation so as to prevent splaying and premature beak-off of the extenders from the spine. Methods of use are disclosed.