Sacral implant system

Claim 1

A sacral implant system comprising: first and second discrete sacral plates for mounting on opposite sides of said sacrum adjacent the lumbosacral junction, each of said sacral plates having at least a pedicle and oblique mounting means for rigidly fixing each of said sacral plates independently to opposite lateral portions of said sacrum, first and second rods extending in a superior direction in a generally parallel relationship from respective ones of said sacral plates on opposite sides of the centerline of said lumbar spine, and means rigidly fixing said rods to said sacral plates, at least one connecting member rigidly interconnecting said rod superior to said sacral plates, and a superior offset fixation plate rigidly affixed to at least one of said rods, a pedicle screw fixed to and through the pedicle of a vertebra, and means rigidly affixing said pedicle screw to said offset fixation plate, each of said pedicle and oblique mounting means including a fixation screw having a lower threaded portion, a head and a cylindrical section adjacent said head, said sacral plate including cylindrical bores corresponding to each of said pedicle and oblique mounting means, each of said bores having a diameter slightly greater than a respective cylindrical section on a respective fixation screw enabling said screw to rotate and reciprocate in said bore while substantially eliminating angular movement of said relative to said plate, said cylindrical bore of said pedicle mounting means having an axis that extends in a medial and anterior direction from said sacral plate, said cylindrical bore of said pedicle mounting means being located medially from the cylindrical bore of said oblique mounting means.