Fishers-based Nexxt Spine LLC, a designer and manufacturer of spinal implants, is consolidating operations and moving its headquarters and manufacturing facility to Noblesville. The city of Noblesville announced Monday that its Common Council approved a three-year tax abatement for Nexxt Spine, which is expected to add 44 jobs by 2018. The Indiana Economic Development Corp. also is expected to provide incentives, the city said.