[Lumbar interspinous non-fusion techniques: comparison between Coflex™ and Wallis].

Objective: To compare the short-term clinical outcome of non-fusion techniques using interspinous implantation Coflex(TM) and Wallis treatment in patients with lumbar spine degenerative diseases.

Methods: Forty-one cases of lumbar stenosis, 18 of lumbar disc herniation, and 34 of lumbar stenosis with lumbar disc herniation were evaluated. Among the 43 cases receiving Coflex(TM) implantation, 41 had operations in one segment and 2 in 2 segments. In the other 50 cases with Wallis implantation, 47 had fixation of 1 segment and 3 had 2 segments fixed. JOA Score, Oswestry Disable Index (ODI) and VAS were used to evaluate the short-term clinical results.

Results: The average operating time was 64.55 min in Coflex(TM) implantation with an average blood loss of 81.82 ml. The average operating time was 82.71 min in Wallis implantation, which caused an average blood loss of 89.66 ml. Significant improvements in the JOA Score, ODI and VAS were noted after the operations.

Conclusion: The two interspinous non-fusion techniques, Coflex and Wallis, produce good short-term clinical outcome in the treatment of lumbar spine degenerative diseases.