Untitled Deck Flashcards
What minerals affect bone growth and remodeling?
Calcium, phosphorus, magnesium, fluoride, manganese.
Which vitamins are important for bone health?
Vitamins A, C, D, K, and B12.
What hormones influence bone growth?
IGFs (stimulated by GH), T3 and T4, sex hormones (estrogen in females, testosterone in males).
What is a fracture?
A fracture is a break in a bone.
What are the phases of bone healing?
Reactive Phase, Reparative Phase, Bone Remodeling Phase.
What is an Open/Compound fracture?
The broken ends of the bone protrude through the skin.
What is a Comminuted fracture?
The bone is splintered, crushed, or broken into pieces at the site of impact.
What is a Greenstick fracture?
A partial fracture where one side of the bone is broken and the other side bends.
What is an Impacted fracture?
One end of the fractured bone is forcefully driven into the interior of the other.
What is a Pott fracture?
Fracture of the distal end of the fibula, may include injury of the distal tibial articulation.
What is a Colles fracture?
Fracture of the distal end of the radius where the distal fragment is displaced posteriorly.
What is a Vertebral Compression Fracture (VCF)?
One or more vertebrae fractures and becomes compressed into a wedge-shape.
What is the role of bones in calcium homeostasis?
Bones store 99% of the body’s calcium and regulate calcium levels.
What happens when calcium levels drop?
Parathyroid hormone (PTH) is stimulated, increasing bone resorption and releasing calcium.
What does calcitonin (CT) do?
CT inhibits osteoclast activity and accelerates deposition of calcium into bone.