14. The facet implant of claim 1 , wherein the insert is formed of metal, polymer, ceramic, or combinations thereof.
1. A facet implant comprising: an insert positionable between a first facet of a facet joint and a second facet of the facet joint, the insert configured to exert a distraction force on the first and second facets: an anchor connected to the insert and configured to secure to one of the first and second facets; a sensor coupled to the insert and configured to sense load on the facet joint; and a shrink-wrap material secured at least partially around the insert, wherein the shrink-wrap material includes burrs or barbs.