The Coflex®COMMUNITY Study: An Observational Study of Coflex® Interlaminar Technology

Inclusion Criteria: 1. Patient is skeletally mature and has at least moderate impairment in function, experiences relief in flexion from his/her symptoms of leg/buttocks/groin pain, with or without back pain, and has undergone at least 6 months of non-operative treatment; 2. Patient is treated surgically at 1 or 2 contiguous lumbar motion segments with the coflex Interlaminar Device from L1-L5 after decompression of stenosis at the affected level(s), where such use is not contraindicated as noted below. Exclusion Criteria: 1. Prior fusion or decompressive laminectomy at any index lumbar level; 2. Radiographically compromised vertebral bodies at any lumbar level(s) caused by current or past trauma or tumor (e.g., compression fracture); 3. Severe facet hypertrophy that requires extensive bone removal which would cause instability; 4. Grade II or greater spondylolisthesis; 5. Isthmic spondylolisthesis or spondylolysis (pars fracture); 6. Degenerative lumbar scoliosis (Cobb angle of greater than 25°); 7. Osteoporosis; 8. Back or leg pain of unknown etiology; 9. Axial back pain only, with no leg, buttock, or groin pain; 10. Morbid obesity defined as a body mass index \> 40; 11. Active or chronic infection - systemic or local; 12. Known allergy to titanium alloys or magnetic resonance imaging (MRI) contrast agents; 13. Cauda equina syndrome defined as neural compression causing neurogenic bowel or bladder dysfunction; 14. Vulnerable population including pregnant women, prisoners, students and employees of treating physicians, and others who can be subject to coercion; 15. Patient is unwilling to complete his/her surveys.