Preliminary Report of Percutaneous Vertebroplasty for the Treatment of the Burst Fractures with Spinal Canal Encroachment / 대한신경손상학회지

ABSTRACT

OBJECTIVE: Percutaneous vertebroplasty is a minimally invasive procedure to relieve or decrease pain in patients with osteoporotic compression fractures. However, vertebroplasty in the osteoporotic burst fracture patients with preoperative canal encroachment are still being debated, because it can aggravate spinal canal encroachment. The objects of this study is evaluation of the changes in spinal canal narrowing after percutaneous vertebroplasty. METHODS: Inclusion criteria was osteoporotic bursting fracture patients with 5 to 20% canal encroachment (less than 5 mm). Exclusion criteria included pathological fractures, unstable vertebral fractures involving the posterior column, and severe neurological deficit. We measured the changes in spinal canal narrowing by pre- and postoperative computed tomography. Degree of canal encroachment was measured as the distance between the imaginary line along the posterior margin of the bony fragment and the maximal anterior imaginary line of the spinal canal in the axial CT scan. RESULTS: This study was based on 10 patients (1 male and 9 female; age range, 52-89 years; mean age, 75 years). The mean decrease in the compression rate of the vertebral body height was 14.4% (43.4% to 29%). The mean decrease in the kyphotic angle was 4.3degrees (11.7degrees to 7.4degrees). The mean preoperative canal encroachment were 3.5 mm and postoperative canal encroachment was 3.7 mm, respectively. The mean preoperative VAS score was 4.3 and postoperative VAS score was 1.4. CONCLUSION: Vertebroplasty can be a safe treatment option for osteoporotic burst fractures with preoperative minimal canal encroachment.