The application is directed to implants and methods of spacing vertebral members. The implants include a body sized to fit within the desired space. One or more relief cuts are formed within the body and may include a variety of sizes, and shapes. Resorbable material is positioned within the relief cuts. The resorbable material includes an initial stiffness to give the implant a first rigidity when initially inserted into the patient. Over time, the resorbable material is absorbed causing the stiffness to decrease thereby lessening the rigidity of the implant. In general, the implant includes a maximum rigidity when the implant is initially inserted within the patient, and a minimum rigidity after the resorbable material is absorbed within the patient.