An Evaluation of the Effect of the AmnioFix Amniotic Membrane Allograft in Patients Undergoing Posterior Instrumentation Removal

Inclusion Criteria: * Adults (18 years or older) * Diagnosed with lumbar pathology requiring elective lumbar interbody fusion * Willingness to comply to follow-up examinations and diagnostic imaging procedures * Ability to give full written informed consent Exclusion Criteria: * Previous surgical procedure performed at same site * Sign or symptoms of other disease which could result in allograft failure * Require a corpectomy * Participating in another drug or device clinical trial * Pregnant or may become pregnant during the study * Prisoner * Involved in workmen's compensation or other litigation relative to a spine injury * Past medical history of allograft implantation which resulted in graft failure * Any condition requiring treatment above the normal standard of care * Currently taking medications which could affect graft incorporation (supervising physicians discretion) * Auto-Immune disease * Renal failure * Failure to sign or understand informed consent information * History of drug and/or alcohol abuse * Allergic to aminoglycosides