Importance

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Abstract

An interbody device for use between a pair of adjacent vertebrae includes a body and at least one expansion member. The body has upper and lower walls that are joined by a rear wall that functions as a spring hinge. The walls have anterior ends that are supported in a non-expanded configuration by spaced feet that project out from the walls. The expansion member is elongate and has a threaded portion that is threadably received in the rear wall. Each expansion member also includes a head having a wedge portion that engages the anterior ends of the walls and forces the walls apart as the expansion member is screwed into the body. Preferably, the expansion member is only one of a plurality of expansion members found in a kit which vary with respect to the diameter of the expansion member head. Further, a support and connecting plate is preferably utilized subsequent to installation of the devices between vertebrae to connect the connected pair of the devices.

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First Claim