<p>Implants comprising a plurality of separate cortical bone units (10). which have been at least partially demineralized and are osteoinductive, are described herein. The implants can be used in methods for treating bone. Also, disclosed are methods for treating spinal conditions using these implants. The spinal conditions include but are not limited to repairing damage to or defects in the spine, such as fractures in a vertebral (30) body or degeneration of spinal discs.</p>
