2. Patients who have ever suffered an anaphylactic reaction. 3. Patients who have ever suffered hypersensitivity to an implant. 4. Patients with a history of allergy to porcine or bovine protein. 5. Patients with rheumatoid arthritis. 6. Patients with ankylosing spondylitis. 7. Patients who are suspected of having spinal deformity with a negative serum test 8. Subjects who are pregnant and/or breast-feeding and/or plan a pregnancy. 9. Subjects with psychiatric disorders who are considered inappropriate to participate in this trial by the Principal Investigator.