Instruments for manipulating a vertebra

摘要

A system for manipulating one or more vertebra is disclosed. In one embodiment, a system is disclosed which comprises a first bone anchor (100) which can be connected to a first vertebra; a second bone anchor (100) which can be connected to a second bone anchor; a spinal rod (12) which can be positioned in a receiving member (140) of the first bone anchor and in a (140) receiving member of the second bone anchor; a first instrument (10) which can be connected to the receiving member of the first bone anchor; a second instrument (10) which can be connected to the receiving member of the second bone anchor; and a connector (200) which can be coupled to the first instrument and to the second instrument. The first instrument can be manipulated to rotate the first bone anchor and the first vertebra relative to the second vertebra. The connector can be moved to manipulate the first instrument and the second instrument to rotate the first vertebra and the second vertebra relative to one another. The receiving member of the first bone anchor is adjustable relative to a bone engaging shaft (114) of the first bone anchor in a first direction and restricted from motion in a second direction.