Orthonotes
Orthonotes
by the.bonestories
v3.0 Fusion
v3.0 Fusion
general topic hub

Bone Grafts and Substitutes

Autograft is gold standard: osteogenic + osteoinductive + osteoconductive (iliac crest). Allograft provides scaffold (osteoconductive) ± growth factors; immune & disease transmission risks minimized by processing. Substitutes: calcium phosphates (HA/TCP), calcium sulfate, bioactive glass; mainly osteoconductive. Biologics: BMP‑2/7, PRP (controversial), bone marrow aspirate concentrate. Applications: nonunion, defects, spinal fusion; match graft biology to defect needs.

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Autograft is gold standard: osteogenic + osteoinductive + osteoconductive (iliac crest). Allograft provides scaffold (osteoconductive) ± growth factors; immune & disease transmission risks minimized by processing. Substitutes: calcium phosphates (HA/TCP), calcium sulfate, bioactive glass; mainly osteoconductive. Biologics: BMP‑2/7, PRP (controversial), bone marrow aspirate concentrate. Applications: nonunion, defects, spinal fusion; match graft biology to defect needs.
MCQs

High-yield practice questions

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Question 1

Which of the following graft types is considered the gold standard for bone grafting due to its complete biological properties?

Question 2

What is the primary biological mechanism by which autografts promote bone healing?

Question 3

Which of the following is a key advantage of using allografts?

Question 4

Which synthetic bone substitute is known for its rapid resorption?

Question 5

What is the primary function of bone morphogenetic proteins (BMPs) in bone grafting?

Question 6

What is a significant disadvantage of using autogenous bone grafts?

Question 7

Which of the following properties is primarily associated with allografts?

Question 8

What is the primary advantage of synthetic bone substitutes compared to natural bone grafts?

Question 9

Which of the following is a potential risk associated with the use of allografts?

Question 10

In which clinical scenario is an autogenous cancellous bone graft most commonly utilized?