Abstract
Introduction
More than 2 years after surgery, the short-term results of Dynesys dynamic stabilization technique and fusion technique used for the patients with degenerative lumbar disease were compared, to evaluate the efficacy of Dynesys system and its prevention for adjacent segment disease.
Materials and Methods
From December 2008 to November 2010, 70 patients who got single segment fixation underwent Dynesys dynamic stabilization, and then they were followed up for 24 to 47 months (average 33 months). The surgery duration, blood loss, hospital time, operative outcomes, ODI scores, VAS scores between preoperation and postoperation, and the ROM of operative segment and upper segment postoperatively were evaluated and compared with those of the 70 cases who got single segment lumbar spinal fusion in the same period.
Results
The pain and neurological function were improved obviously and there was no screws loosen, fracture, and displacement in both groups by the latest follow-up. When after 2 years postoperatively, outcomes of Dynesys group and fusion group were 93.15 and 90.67% retrospectively. Surgical duration, blood loss, and hospital time were less in Dynesys group than in fusion group; however, ODI and VAS scores were found no difference in the both groups. The ROM of operative segment was greater in Dynesys group than in fusion group; however, the ROM of upper segment was found no difference between the groups. Adjacent segment disease occurred in two cases (2/70, 2.9%) belonged to fusion group.
Conclusion
With right indications preoperationally, compared with fusion technique, Dynesys technique contributed to reducing operative invasion and hospital stay, getting the good efficacy. And whether it could reduce the incidence of adjacent segment disease needs more long-term follow-up.
None declared
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