AI Article Synopsis
- This study investigated the effectiveness of two surgical techniques for treating recurrent lumbar disc herniation along with lumbar instability: unilateral pedicle screw fixation with TLIF via the paraspinal approach, and bilateral fixation with posterior lumbar interbody fusion using the midline approach.
- A total of 35 patients were divided into two groups to compare outcomes such as operation time, blood loss, and pain scores before and after surgery, revealing significant improvements across all patients post-surgery.
- Both techniques achieved good results, with no major complications, but the unilateral approach had advantages in operation time and blood loss compared to the bilateral approach.
Article Abstract
Objective: To explore the clinical effects of unilateral pedicle screw fixation and transforaminal lumbar interbody fusion (TLIF) through paraspinal muscle approach for recurrent lumbar disc herniation combined with lumbar instability.
Methods: A total of 35 patients with recurrent lumbar disc herniation combined with lumbar instability were treated between March 2008 and May 2010, including 15 patients managed by the paraspinal muscle approach with unilateral pedicle screw fixation and transforaminal lumbar interbody fusion (TLIF) (unilateral fixation group) and 20 patients by the posterior midline approach with bilateral pedicle screw fixation and posterior lumbar interbody fusion (bilateral fixation group). Operation time and intraoperative blood loss were observed, preoperative and postoperative JOA score and VAS score in low back pain and legs pain, the interbody fusion condition were compared between two groups.
Results: All patients were followed up from 6 to 30 months with an average 16.8 months. All clinical symptoms had obviously improved postoperatively. X-rays showed good interbody fusion (only 1 case did not obtain fusion in bilateral fixation group) without cage displacement or settlement and implant loosening or breakage. There was significant difference in operation time and the intraoperative blood loss between two groups (P < 0.05). Postoperative JOA score had obviously decreased than preoperative one (P < 0.05). At 1 week after surgery, there was significant difference in VAS score of low back pain between two groups and there was no significant difference in VAS score of legs pain between two groups (P > 0.05); at final follow-up, there was no significant difference in VAS score of low back pain and legs pain between two groups (P > 0.05).
Conclusion: Two methods both can obtain satisfactory effect in treating recurrent lumbar disc herniation combined with lumbar instability. Through the paraspinal muscle approach with unilateral pedicle screw fixation and TLIF has advantages of smaller surgical incision, shorter operation time, less intraoperative blood loss, faster relief in low back pain after operation, etc.
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