Abstract: A spinal instrument with a set screw loading and retention mechanism includes a first tube, a screw slot, and a retention mechanism. The first tube includes an inner lumen disposed concentric and proximate to a head portion of a bone screw. The screw slot is disposed along a portion of the first tube at a distance from the head portion of the bone screw and is configured for loading of a set screw for locking a spinal rod within the head portion of the bone screw. The retention mechanism is disposed along at least a portion of the inner tube configured to selectively retain the set screw. In other features, the first tube includes either an internal rod reduction tube or a screw extender tube.

Abstract: An exemplary facet screw for joining a first facet of a first vertebra with a second facet of a second vertebra includes proximal and distal ends. The proximal end includes a threaded region for attachment to the first facet. The distal end includes a non-threaded region with a first configuration that freely inserts into a bore of the second facet and a second configuration that partially interferes with the bore to retain the distal end within the second facet.

Abstract: A spinal instrument with a set screw loading and retention mechanism includes a first tube, a screw slot, and a retention mechanism. The first tube includes an inner lumen disposed concentric and proximate to a head portion of a bone screw. The screw slot is disposed along a portion of the first tube at a distance from the head portion of the bone screw and is configured for loading of a set screw for locking a spinal rod within the head portion of the bone screw. The retention mechanism is disposed along at least a portion of the inner tube configured to selectively retain the set screw. In other features, the first tube includes either an internal rod reduction tube or a screw extender tube.