Titanium Surgical Mesh and MOSS-Miami Screws for Lumbar Fusion.

This is a single arm multi-center study to determine the clinical success of the DePuy Spine Titanium Surgical Mesh with MOSS Miami Spinal Fixation System Pedicle Screws in the treatment of one or two adjacent levels of degenerative disc disease of the lumbar spine (L2 - S1).

Study Success is as a compound endpoint requiring:

* Radiographic Fusion,
* Improvement in Pain/Function,
* Maintenance/Improvement in Neurologic Status, and
* Freedom from Secondary Surgical Intervention.
* The rate of Adverse Events must be no worse than in the control group as well.

Secondary Endpoints Include:

* Adverse Events
* SF-36 Health Related Quality of Life
* Disc Space Height
* Work Status

Comparison:

Results will be compared to an historical control group treated with the Lumbar I/F Cage with VSP System.

• Lumbar I/F with cage and pedicle screws (Device): Surgical Titanium Mesh™ with MOSS-Miami™ Pedicle Screws

Primary outcomes

• Radiographic Fusion
• Oswestry Disability Index
• Motor Function
• Adverse Events
• Secondary Surgical Interventions

Secondary outcomes

• SF-36
• Graft site pain
• Back pain
• Leg pain
• Disc space height

Sex: All, ages: 18 Years to 79 Years

Inclusion Criteria:

* Persistent back and/or leg pain refractory to 6 months of non-surgical therapy
* Radiographic evidence of significant disc degeneration at one or two of the adjacent lumbar levels L2-S1.

Exclusion Criteria:

* Abnormality at more than two levels,
* Prior fusion surgery of the lumbar spine; prior discectomies or IDET allowed,
* Infection in the disc or spine, past or present,
* Active infection at time of surgery,
* Tumor in the spine,
* Significant osteoporosis or metabolic bone disease,
* Greater than Grade I spondylolisthesis or significant bony defect in the lumbar spine,
* Pregnant or lactating, or wishes to become pregnant within duration of study,