Anchors for retaining an intervertebral device used for spinal treatment are disclosed. In one embodiment, the anchor has a plate-like body extending between the ends of the anchor. In another embodiment, the anchor has a bar-shaped body that is disposed along the top or bottom of the intervertebral device when the anchor is deployed. Various latches, retainers, and locking structures for holding the intervertebral device and the anchor together are disclosed.