Abstract: An encircling device for promoting arthrodesis of a cervical, thoracic and/or lumbar facet joint. The fusion can occur through the device as well as around and/or through the facet joint. The top cap may include a container where bone promoting substances are placed. A top cap may be placed within, around or over the top of the encircling device and affixed thereto using a variety of different fixation devices. In addition, the encircling device and/or top cap may be secured using a fastener or anchor such as a screw or other member to a interspinous process spacer, pedicle, pars interarticularis, spinous process, sacral ala, lamina, facet articular process, transverse process or other spinal bony anatomy.