NBDE practice questions
A bone graft is a surgical procedure used to fix problems with bones or joints. Bone grafting, or transplanting of bone tissue, is beneficial in fixing bones that are damaged from trauma, or problem joints. It’s also useful for growing bone around an implanted device, such as a total knee replacement.
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NBDE Quiz # 76
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1. Question
Which of the following is considered the “gold standard” in bone grafting?
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The correct answer is A. Autologous bone, the gold standard in bone grafting, is the only graft material that contains all four qualities of osteogenesis, osteoinduction, osteoconduc- tion, and osseointegration. An autologous graft (autograft) is composed of cells or tissues that are reimplanted into the same individual from whom the graft was harvested. An allograft is composed of cells or tissues that are trans-planted into a different individual from whom the graft was harvested. These grafts are also known as homologous grafts. A xenograft is composed of cells or tissues that are harvested from one species and transplanted into another. An alloplast is an inert material originating from a nonliving source that is surgically im-planted. An alloplast may be a metal, polymer, (plastic, silicone, etc.), or other nonbiologic material. Recombinant human bone morpho-genetic protein-2 (rhBMP-2) is a growth factor produced using recombinant DNA technology that has been used to promote bone growth. The osteoinductive agent (BMP) is combined with an osteoconductive matrix (collagen) to promote osteogenesis. This material is not con-sidered to be the gold standard of bone grafting.
Incorrect
The correct answer is A. Autologous bone, the gold standard in bone grafting, is the only graft material that contains all four qualities of osteogenesis, osteoinduction, osteoconduc- tion, and osseointegration. An autologous graft (autograft) is composed of cells or tissues that are reimplanted into the same individual from whom the graft was harvested. An allograft is composed of cells or tissues that are trans-planted into a different individual from whom the graft was harvested. These grafts are also known as homologous grafts. A xenograft is composed of cells or tissues that are harvested from one species and transplanted into another. An alloplast is an inert material originating from a nonliving source that is surgically im-planted. An alloplast may be a metal, polymer, (plastic, silicone, etc.), or other nonbiologic material. Recombinant human bone morpho-genetic protein-2 (rhBMP-2) is a growth factor produced using recombinant DNA technology that has been used to promote bone growth. The osteoinductive agent (BMP) is combined with an osteoconductive matrix (collagen) to promote osteogenesis. This material is not con-sidered to be the gold standard of bone grafting.
