Prosthetic facet joint ligament

1. A prosthetic facet joint ligament for stabilizing a natural facet joint, comprising a pair of attachment end portions and an intermediate portion, wherein each attachment end portion of the ligament is adapted to attach to an anchoring surface on opposite sides of the natural facet joint, and wherein each attachment end portion comprises a fastener, and wherein the intermediate portion comprises first and second intermediate portions having curved ends, each comprising a nonbioresorbable material selected from the group consisting of polyesters, polyurethanes; polytetrafluoroethylene (PTFE); carbon fibres; silk; rubber, hydrogels, and glass, and mixtures thereof, wherein the curved ends of the first and second intermediate portions are interlocking members attached to each other by a bonding material.

2. The ligament of claim 1 wherein the intermediate portion comprises an elastic portion.

3. The ligament of claim 2 wherein the elastic portion comprises a polyester.

4. The ligament of claim 2 wherein the elastic portion comprises rubber.

5. The ligament of claim 1 wherein the intermediate portion is braided.