Osteosynthesis plate system

AN OSTEOSYNTHESIS PLATE SYSTEM IS PARTICULARLY WELL ADAPTED TO SECURELY MELT ADJACENT CERVICAL VERTEBRAS. THE PLATES ARE ADAPTED TO MOUNT ON THE PREVIOUS OR REAR SURFACES OF THE VERTEBRAS. PLATES (12) FOR MOUNTING ON PREVIOUS VERTEBRAL SURFACES HAVE A CONCAVE BONE CONTACT SURFACE AND AN INTEGRAL BONE THREADED LOCK MECHANISM (15, 24, 42) WITH EACH THREADED HOLE. IN ADDITION, THE CONTACT SURFACE WITH THE BONE OF THE PLATE HAS A PLURALITY OF PROTECTIONS (26) OF PENETRATION OF THE BONE TO MORE SECURELY FIX THE PLATE TO THE BONE. PLATES (100) TO MOUNT ON REAR VERTEBRAL SURFACES ALSO HAVE PROTECTIONS (108) FOR BONE PENETRATION ON THEIR CONTACT SURFACES, WITH THE BONE. SUCH PLATES ARE FORMED SO THAT THEY HAVE A CONTACT SURFACE WITH THE CURVED BONE THAT IS CONCAVE IN THE TRANSVERSAL AXIS OF THE PLATE AND CONVEX IN THE LONGITUDINAL AXIS OF THE PLATE. THREADED HOLES DETAILED PLATES ARE BUILT TO GUIDE A BONE THREAD ALONG A DESIRED ANGLE TO IMPROVE ANCHORAGE OF THREADS IN THE BONE.