5-Year Global Study on MAST™ Minimally Invasive Fusion Procedures to Treat Degenerative Lumbar Spine (MASTERS-D2)

Inclusion Criteria: * Patient is ≥ 18 years of age (or minimum age as required by local regulations) * Patient has degenerative disc disease and an indication for a single or double level instrumented lumbar fusion for the treatment * Patient agrees to participate in the study and is able to sign the Data Release Form/Informed Consent * The procedure planned for the patient complies with the labeling of the Devices that may be used in the surgical procedure as described in the section Medical Devices of the Clinical Investigation Plan * Patient is planned to be submitted to a minimally invasive fusion procedure using a posterior (PLIF, TLIF, MIDLF) or anterolateral (OLIF, ALIF, DLIF ) technique\* \*For a double level instrumented fusion, the same procedure must be used for both levels. * The patient is willing and is able to perform study procedures and required follow-up visits. Exclusion Criteria: * Patient that has already undergone a lumbar fusion surgery * Patient that has already undergone open lumbar surgery other than standard decompression surgery * Indications for the procedure other than degenerative spine disease like: Osteoporotic vertebral fractures, Spine trauma fractures or Spine tumor * Illiterate or vulnerable patients (e.g. minors, participants incapable of judgment or participants under tutelage) * Concurrent participation in another clinical study that may confound study results.