LA musculoskeletal 1 Flashcards
comparment, osteomyelitis, OA, RA, septic arth
pain out of proportion to injury. exam: pain with passive stretching.
compartment syndrome
PE: pulselessness, pallor, dec sensation. Capillary refill preserved
.compartment syndrome
DX compartment syndrome
intracompartmental pressure >30 mm Hg or delta pressure <20-30. increased creatinine kinase & myoglobin.
organisms in chronic osteomyelitis
s. aureus, staph epidermis, grm neg pseudomonas. e coli
chr osteomyelitis tx
surg debridement and cultures
Xr: soft tissue swelling, sequestrum(segments of necrotic bone that has become separated from nml bone),
Involucrum: new periosteal bone formation that surrounds necrotic bone(sequestrum).
chr osteomyelitis
common site for acute osteomyelitis
femur and tibia. Vertebra in adults.
R/F: sickle cell ds, DM, immunocompromised
acute osteomyelitis
common spreading source of acute osteomyelitis
acute hematogenous spread: common in children. Direct inoculation.
organisms in acute osteomyelitis
1) most common
2) coagulase neg
3) pathognomic for sickle cell ds
4) neonates
5) assoc with puncture wounds thru tennis shoes
1) most common: st. aureus
2) coagulase neg: st. epidermis
3) pathognomic for sickle cell ds: salmonella
4) neonates: group B strep
5) assoc with puncture wounds thru tennis shoes: pseudomonas aeruginosa
acute osteomylitis
1( labs)
2. most sensitive test
3. gold standard
- CRP more useful. get ESR, WBC inc.
- MRI
- bone aspiration
herberden node
DIP enlargement
bouchard node
PIP enlargement
felty syndrome
RA + splenomegaly + neutropenia
Caplan syndrome
RA + pneumoconosis + pulmonary nodules
RA
1) best Initial test
2) specific test
1) RF
2) anti-cyclic citrullinated peptide antibodies
initial DMARD in RA pts
methotrexate
septic arthritis tx
1) empiric
2) gm + cocci
3) gm neg cocci or gonococcus
4) gm neg rods
1) ceftriaxone + vanco (+/- p=anti-pseudomonas suspected)
2) vanco. naficillin (If MSSA suspected)
3) ceftriaxone. or ceftotaxime, ceftazidine, FQ
4) ceftazidime + gentamycine. cipro alternative if needed.
rf for hip dysplasia
breech, 1st born, female, FH
Barlow manuever
gentle adduction w/out downward pressure to feel for dislocation, resulting in a click.
ortolani manuever
abduction and elevation to feel for reducibility, resulting in a click
hip dysplasia management < 6 months of age
and 6 mnths-2 years
pavlik harness
closed reduction in OR
in infants > 3months, hip dislocation can be fixed and what test can be used instead
Galeazzi
pelvic fx may have ecchymosis where on exam
perineal