[Using of transforaminal lumbar interbody fusion in lumbar revision surgery].

OBJECTIVE: To analyze the effectiveness of transforaminal lumbar interbody fusion (TLIF) for failed back surgery syndrome (FBSS). METHODS: Between October 2003 and December 2007, 36 patients with FBSS were treated with TLIF. There were 19 males and 17 females with an average age of 52.6 years (range, 46-68 years) and an average disease duration of 1.6 years (range, 3 months-15 years). Of 36 patients, reoperation was performed in 25, 10 received 3 operations, and 1 had 5 operations. A total of 50 segments were involved in fusion, including L4,5 in 12 cases, L5, S1 in 10 cases, L3, 4 and L4, 5 double segments in 8 cases, and L4, 5 and L5, S1 double segments in 6 cases. According to X-ray films, CT, and MRI examination, 12 patients were diagnosed as having lumbar instability secondary to total laminectomy, 18 as having recurrence of lumbar disc protrusion, and 6 as having recurrence of lumbar spondylolisthesis. RESULTS: Dural rupture occurred in 1 case and was repaired by suturing without cerebrospinal fluid leakage was observed; 1 had deep incision infection of Staphylococcus; and 1 had transient single irritation sign because of hematoma formation and was cured after symptomatic treatment. The other incisions healed by first intention. No patients had permanent nerve injury or deterioration. Thirty-three cases were followed up 18-72 months (mean, 35.2 months). At 12 months, all the operated segments reached interbody fusion, and no breakage of screw or Cage dislocation occurred. Japanese Orthopaedic Association (JOA) scores showed significant difference (t = 2.45, P = 0.01) between before operation (14.2 +/- 4.1) and 18 months after operation (23.9 +/- 2.6). The rate of clinical improvement was 90.9% (23 cases of excellent, 7 cases of good, 3 cases of acceptable). CONCLUSION: The TLIF simplifies the manipulation of lumbar revision surgery and decreases the operation risk and the operative complications for the treatment of FBSS.