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Clinical application of piezosurgery in thoracolumbar intraspinal tumor with recapping laminoplasty

Objective To evaluate the safety and efficacy of the recapping laminoplasty with piezosurgery for thoracolumbar intraspinal tumor. Methods From July 2012 to July 2013,10 patients underwent intraspinal surgery with osteotomy and replacement of spinal laminae using piezosurgery and mini-plates to reconstruct the posterior structure of thoracolumbar spine. The mean follow-up period was one year,and the patients were followed for neurologic recovery and imaging changes. Results Operative incisions of 10 cases were all primarily healed. All of the patients were followed up and the mean follow-up period was one year. CT scan and three-dimensional CT scans of thoracolumbar spine examinations showed replacement of spinal laminae began to merge;thoracal or lumbar physiological radian was good and no looseness or breakage was found in the mini-plates fixation system after 3 months. MRI examinations showed no neoplasm recurrence or spinal cord compressed presented after 3 months. Conclusion Recapping laminoplasty with piezosurgery can provide precise anatomic reconstruction of the spinal canal with little risk. It's a new method to treat thoracolumbar intraspinal tumor.