Efficacy Study of NuCel® in Patients Undergoing Fusion of the Lumbar Spine

The study is a prospective, single center clinical trial to establish the efficacy of NuCel,
a minimally manipulated allograft tissue, for use in lumbar interbody and intertransverse
fusion procedures. Subjects will undergo standard interbody fusion surgery as per the signed
informed consent with NuCel and autograft bone. Patients will be evaluated postoperatively at
6 weeks, 3 months, 6 months, 1 year, and 2 years (if required).

Inclusion Criteria:

- Must be diagnosed with degenerative disease of lumbar spine

Exclusion Criteria:

- Back pain due to injury

- Back pain that is caused by infection, cancer, lesions(growths) or bone disease such
as osteoporosis

- Any terminal (will not recover from the disease) or autoimmune disease including but
not limited to HIV infection, or rheumatoid arthritis

- Any other medical condition that might affect normal healing

- Less than 21 years of age

- More than three levels of fusion needed

- Recent history (within past 6 months) of any chemical or alcohol dependence

- Morbid obesity (Body Mass Index of more than 40)

- Currently a prisoner

- Currently experiencing a major mental illness

- Pregnancy at the time of enrollment

- Previously diagnosed with diseases of the bone such as osteoporosis, osteopenia or
osteomalacia (softening of the bones). Patients with any of the risk factors for
osteoporosis may have DEXA scans performed prior to study entry.