Spinal alignment apparatus includes bodies which connect to vertebra to be aligned, and elongated elements that connect to the bodies. The elements are adjustable relative to the bodies in multiple dimensions, with locking mechanisms that allow the alignment to proceed in an orderly fashion until a desired...http://www.google.es/patents/US6802844?utm_source=gb-gplus-sharePatente US6802844 - Spinal alignment apparatus and methods
