PASS OCT® Post-market Clinical Follow-up

Inclusion Criteria: * Patient with * degenerative disc disease or, * spondylolisthesis, or * spinal stenosis, or * trauma, or * atlanto-axial fractures with instability or * cervical tumors. * Patient operated with PASS OCT® * Patient \> 18 years * Patient affiliated to health care insurance (social security in France) * Patient able to complete a self-administered questionnaire * Patient able to understand the protocol and the planning visit * Patient able to sign an informed consent form Exclusion Criteria: * Patient unable or unwilling to sign an informed consent form * Patient unable to complete a self-administered questionnaire * Pregnant patient or intending to get pregnant within the next 3 years * Patient judged as non-compliant by the investigator or not able to come back for follow-up visits