Bones 1 Flashcards
Senility leads to
Decrease osteoblastic activity
Estrogen deficiency leads to
Increased osteoclastic activity
Corticosteroids leads to
Decreased osteoblastic activity
Thinning of bone cortices and trabeculae with normal bone mineralization is seen in
Osteoporosis
Failure of mineralization + accumulation of excessive osteoid on the surface of bone trabeculae
Rickets
The problem in bone matrix only
Osteomalacia
The problem in both the bone matrix and the cartilaginous matrix
Rickets
Used to stain the bone for rickets
Von kossa stain
Extra skeletal manifestations of rickets
Pot belly - splenomegaly - lymphadenopathy - anemia - low calcium and phosphorus
generalized bone decalcification and resorption as a result of excessive secretion of parathyroid hormone by hyperplasia or adenoma of the parathyroid glands.
Osteitis fibrosa cystica
results from osteoclastic dysfunction due to a slow virus infection by a paramyxovirus.
Paget’s disease
If paget’s disease is localized it will affects the ……. only
Tibia
Thickened bone trabeculae with mosaic (jigsaw puzzle) appearance is seen in
Paget disease
Deafness and osteoarthritis are complications of
Paget disease
Bones at risk of avascular necrosis
Head of humerus.
Head of femur.
Neck of talus.
Waist of scaphoid.
