Hook assembly for engaging a spinal column

摘要: An apparatus used in the treatment of spinal fractures and scoliosis. A threaded rod carries 2 or more sleeves, each sleeve surrounding a portion slideable along entire length rod. Each engages hook to interconnect with hook. The includes base for engaging sleeve. has bore therethrough which receives sleeve, slot is located parallel communicating bore. width greater than diameter less outside so that can be placed into slotted held position by slipped over projecting integrally connected engage bone column. locking system form nuts securing assembly may place respect When hooks are faced toward other on rod, compression achieved advancing units. Likewise, distraction reversing as facing away from other. tapered have smaller prevent sliding completely through Opposing openings either side movement an instrument, such holder, aid placement before interconnection Preferably, forms part Harrington tensioning means interconnects