Percutaneous reduction and instrumentation of thoracolumbar fractures in the open MRI: Experimental investigations and clinical results
Cell Transformation, Viral
Receptors, Cell Surface
The latest open MRI technology allows to perform open and close surgical procedures under nearly real-time-imaging. An 0.5 Tesla open MRT (SIGNA SP. GEMS, USA) with two vertically positioned magnetic coils is placed in an operation theatre. Two surgeons are able to access the patient between the two coils. Numerous tests regarding the material of instruments and implants were necessary in advance. The specific size of the artifact depending on the puls-sequence and the positioning within the magnetic field had to be examined. Since September 1997 19 patients with unstable fractures of the thoracic and lumbar spine have been treated by dorsal instrumentation under open MRI. Percutaneous insertion of the internal fixator has proven a successful minimally invasive procedure. The positioning of the screws in the pedicle is secure, the degree of indirect reduction of the posterior wall of the vertebral body can be imaged immediately. The diameter of the spinal canal can be determined in any plane. Real-time-imaging of soft-tissue and bone in any plane improves security for the patient and allows the surgeon to work less invasively and more precisely.