Clinical Research Directory

Inclusion Criteria: 1. Subject was diagnosed with DDD, spinal stenosis, or spondylolisthesis; 2. Subject has undergone cervical or lumbar interbody spine fusion at no more than 3 adjacent levels between C2 and T1 or between L1 and S1; 3. Subject has undergone cervical or lumbar interbody spine fusion using NMP Fibers; 4. Subject must be 18 years of age or older at the time of consent; 5. Subject must be willing and able to sign an informed consent document; 6. Subject must be willing and able to return to the study clinic for all follow-up visits, agree to participate in post-operative clinical and radiographic evaluations. Exclusion Criteria: 1. Subject is under 18 years of age at the time of consent; 2. Subject is currently experiencing major mental illness (psychosis, schizophrenia, major affective disorder) which in the opinion of the investigator may indicate that the symptoms are psychological rather than of physical origin; 3. Subject is currently imprisoned.