AUSTIN, Texas--(BUSINESS WIRE)--LDR, a privately held company with innovative spinal implants for non-fusion and fusion applications, announced completion of the 24-month follow-up phase of its two-level IDE study on the Mobi-C® cervical artificial disc. Having previously finalized the 24-month follow-up phase of the one-level study earlier this year, LDR is now the first company to fully enroll and reach two-year follow-up on a concurrent one-level and two-level cervical artificial disc replacement study. LDR completed one-level enrollment in October 2007 and two-level enrollment in March 2008.