Primary investigation of clinical application of percutaneous posterior lumbar interbody fusion

Abstract

Objective To characterize the feasibility, key technology, indications and clinical outcome of percutaneous lumbar interbody fusion. Methods Clinical data from 32 cases [16 made, 16 female, age range 31-77 years, average disease duration (5.0±2.0) years ] underwent percutaneous nucleotomy and endplate curettage was retrospectively analyzed. After percutaneous nucleotomy and endplate curettage, one expandable spinal spacer B-twin was introduced into the intervertebral space and some allograft cancellous bone implanted around the B-twin. Indications for treatment included degenerative lumbar disc herniation (LDH) with intervetebral distability or Ⅰ degree spondylolythesis (21 cases), LDH with intervetebral space collapse (10 cases) and lumbar discogenic pain (1 case). The symptoms and function of all patients were evaluated before, 3 months and 12 months after the operation by clinical outcome judgment criterion of surgical treatment for low back pain formulated by JOA, and the rate of clinical improvement and treatment efficacy were calculated. The JOA scales preoperatively, postoperatively and on the final follow-up was compared using ANOVA in SPSS. The changes before and after surgery with the JOA score and the the rate of clinical improvement between 3 months and 12 months after the operation was also compared using χ2 test. Results The average operation time 1 hour and blood loss 0.05). Conclusions Percutaneous posterior lumbar interbody fusion with B-twin expandable fusion cage could lead to satisfactory outcome in the treatment of degenerative disc disease and intervertebral instability,which minimize surgical soft tissue and trauma spinal damage, does not destroy the structure of spinal stability. The technique The long-term outcome, complications and fusion rate need further observing. Key words: Spondylolisthesis; Spinal fusion; Lumbar vertebrae; Radiology,interventional