Introduction: Giant thoracic disc herniation is a rare condition for which surgical treatment is indicated when there are signs of spinal cord injury. To date, several surgical techniques have been described in the treatment of this condition on small patient series. The main objective is to evaluate the long-term results of a series of 53 patients treated with a minimally invasive endoscopic procedure. The secondary objective is to explain our pre-operative planning and the technical details of our procedure. METHOD: Retrospective monocentric study on a cohort of patients treated in our department. The following medical data from our database are analyzed: Morbidity of operative gesture (duration of procedure, bleeding, postoperative complications), clinical results at the last follow-up visit (thoracic Japanese Orthopedic Association (JOA) score, Frankel score, parietal pain , ability to walk, wish to carry out the same intervention again if necessary). On the radiological level, we evaluated the quality of the resection (total, subtotal, incomplete and impossible), the reappearance of a border of cerebrospinal fluid perimedullary and the presence of an intramedullary T2 hyperintense signal MRI post- operative. All these data are collected and analyzed anonymously. Expected Results: We believe we can demonstrate that thoracoscopy is a valid therapeutic option in the treatment of thoracic disc herniation responsible for spinal cord compression. This with a low morbidity given the minimally invasive nature of the approach.

Inclusion Criteria:

• Patient operated on giant thoracic thoracic disc herniation between May 2001 and October 2016

Exclusion Criteria:

• none

Patient operated on giant thoracic thoracic disc herniation between May 2001 and October 2016