Clinical Research Directory

Inclusion Criteria: * Adult patients, * Patients who have been informed of the research and have not indicated their opposition to the use of their medical data, * Patients who are candidates for their first lumbar spine surgery, whether instrumented or not Exclusion Criteria: * Non-instrumented percutaneous surgery (cementoplasty) * Presence of spinal osteosynthesis equipment * Surgery performed for an infectious or tumoral spinal condition * Surgery via an anterior or lateral approach