MSK/Derm Flashcards
SEE RYANS DECK FOR ANATOMY/NERVES
SEE RYANS DECK FOR ANATOMY/NERVES
Things that shorten in muscle contraction
HIS:
H = just myosin
I = just actin
S = sarcomere
Type I muscle fibres
Slow twitch
red
ox-phos - mitochindria and myoglobin
Ca+ channel on smooth muscle
L-type VG
FGFR-3 constituitive activation effect:
INHIBITION of chondrocyte proliferation
defective bone resorption
Osteopetrosis
Defective bone mineralization
Osteomalacia/rickets (with high ALP)
high ALP alone
Pagets
High ALP with low Ca, low PO4, and high PTH
Osteomalacia/rickets
causes of aseptic necrosis
Alcoholism Sickle/Storage (Gauchers) Endo/exo steroids Pancreatitis Trauma Idiopathic (legg-calve-Perthes) Caissons
Tumour@ epiphysis:
Giant cell:
- benign - osteoclastoma
- 20-40
- soap bubbles
Tumour @ metaphysis:
Osteochondroma:
- benign
- males 65
- via pagets, p53, Rb, infarcts, radiation
- codman’s triangle/sunburt
Osteomyelitis
Tumour @diaphysis
Ewing sarcoma:
- malignant
- males
MCP involvement
RHEUMATOID ARTHRITIS
Random causes of gout
Thiazies - compete for transporters
Von Geirkes - lactic acidosis, compete for transporters
leish nyhan or PRPP excess - overproduction
pseudogout crystals
calcium PPi = chondrocalcinosis
pseudogout epidemiology
OA, hyperPTH, hemachomatosis
Gonococcal artritis triad
STD:
synovitis
tenovitis
dermatitis