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Formagraft" Collagen Bone Graft Matrix is indicated for use in bony voids or gaps that are not intrinsic to the stability of the bony structure. The product should be gently packed into bony voids or gaps of the skeletal system (i.e., the extremities, spine and pelvis). These defects may be surgically created osseous defects or osseous defects created from traumatic injury to the bone. The product provides a bone void filler that resorbs and is replaced by the growth of new bone during the healing process. The bone graft can be mixed with autogenous bone marrow prior to use at the physician's discretion. In weight bearing situations, Formagraft is to be used in conjunction with internal or external fixation devices. The fracture defect treated with Formagraft should not exceed 30 mL.

Formagraft is a bone graft substitute consisting of resorbable purified fibrillar collagen and partially resorbable hydroxyapatite/tricalcium phosphate (HA / {}-TCP) ceramic. The bovine fibrillar collagen component is biocompatible and has low immunogenicity, making it a suitable material for providing a scaffold around which new bone can grow. Both hydroxyapatite (HA) and beta-tricalcium phosphate (B-TCP) ceramic are radiopaque and highly biocompatible. HA is a polycrystalline substance with a stoichiometry similar to bone mineral and is minimally resorbed as bone grows into the scaffold. The porous B-TCP ceramic has a stoichiometry similar to amorphous biologic precursors to bone. In addition, it is biodegradable and its biodegradation products can be reconstituted by the body to form new bone mineral, allowing for bone deposition to occur. The porous HA / B-TCP ceramic has been shown to possess an osteoconductive property for filling bone defects and it can evoke a biologic response similar to that of bone.