Alphatec (NSDQ:ATEC) had a busy day yesterday. The spinal implant maker revealed that it paid $27 million in cash and stock to acquire SafeOp Surgical and its intraoperative neuromonitoring technology, raised $50 million to cover the tab and made a raft of personnel changes – including the installation of former NuVasive Inc. (NSDQ:NUVA) exec Pat Miles as CEO. Oh, and it reported fourth-quarter and full-year results that beat the consensus forecast on Wall Street.