Use of poly(ether ether ketone) cages in foot and ankle surgery.

PEEK cages are an effective alternative when structural bone graft is needed for different fusions around the foot and ankle. Bone fusion rates are high when PEEK cages are filled with autologous bone. No difference in consolidation time in patients was noticed between the cages fixed with staples and those fixed with cannulated screws. Nerve damage, residual pain at the donor site, and cosmetic problems are avoided with the use of PEEK cages. There is no risk of transmission of hepatitis B, hepatitis C, and HIV when using PEEK cages.