Multilevel laminectomy to open the spinal canal carries the risk of spinal deformities and instability. With the aim of preserving and reconstructing the posterior structures the authors developed a novel, minimally invasive, multilevel spinous process splitting and distracting laminotomy approach with or without complementary corticocancellous iliac crest or PEEK cage "archbone" grafting. The technique allows exploration of the spinal canal and the removal of intramedullary pathologies. Moderate enlargement of the spinal canal with preservation of the majority of posterior structures is also possible, so that muscle attachments remain intact and postoperative complications are substantially reduced.This surgical approach, while fulfilling the requirements of previous laminotomy techniques, helps to prevent damage to the crucial posterior stabilizers of the spine. In contrast to conventional spinal canal approaches, preservation of the majority of posterior structures is possible, leaving muscle attachments on the spinous processes and laminae completely intact.Furthermore, the procedure for exposure and decompression of the spinal canal is a suitable method for all spinal segments, the cervical, thoracic, and the lumbar spine in all age groups.
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