Comparison between Unilateral and Bilateral Pedicle Screw Fixation in Lumbar Spinal Fusion
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2011-02-01
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Mahasarakham Hospital Journal
Abstract
Objectives : To determine and comparison unilateral pedicle screw fixation with bilateral fixation in one or two segment lumbar spinal fusion Background : clinical results for unilateral variable screw fixation in isolated L4-5 fusion have been reported to be as good as those for bilateral pedicle screw fixation However, unilateral fixation may not be recommended for multilevel fusion. Methods : Prospective study of 87 patients in Roi-Et hospital were assigned to either unilateral (n = 47 ) or bilateral (n = 40) pedicle screw fixation groups. Operating time, fusion rates and complication rates, were Studies and tested with Independent sample t test X2 test and Fishers exact test Results : There were no significant differences between the two groups in blood loss, clinically satisfactory results , fusion rate and complication rate. But significant differences in duration of operating time, and duration of hospital stay. The number of fusion segments did not affect the fusion rate or Clinical outcomes Conclusion : Unilateral pedicle screw fixation was effective as bilateral pedicle screw fixation in lumbar spinal fusion segments (one or two segments) Based on the results of this study. Unilateral fixation could be used in two segment lumbar spinal fusion.
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Mahasarakham Hospital Journal; Vol.6 No.4 February - April 2010; 1 - 9