Objective
The purpose of this study is to evaluate the efficacy of anterior augmentation with vertebroplasty for spinal stabilization in metastatic spinal tumor patients after posterior decompression of the spinal cord.
Methods
The authors retrospectively analyzed the clinical outcome in 11 patients of extrdural spinal metastasis, after performing a partial corpectomy via a posterior approach to decompress the spinal cord and augmenting vertebral body by injecting poly-methyl methacrylate(PMMA) into it, followed by posterior fixation using pedicle screws and rods. The clinical outcome was evaluated by improvement in pain and change in the grade of muscle power of the lower extremities.
Results
Postoperatively, all patients who had complained back pain improved. Seven out of 8 patients improved in motor power of lower extremities. Three out of 6 patients who had been unable to ambulate became to walk. Pedicle screw instrumentation and spinal stability was maintained in all patients during the follow-up period. There was no major complication except one spinal epidural hematoma immediately after operation and asymptomatic, minor leakage of resin in 4 patients.
Conclusion
Vertebroplasty was an effective method of augmentation of vertebral body to stabilize the spinal column with an acceptable clinical results and minor complication after performing a minimal corpectomy and partial removal of the metastatic lesion via posterior approach.
