trauma Flashcards
SIRS criteria
HR > 90, WBC <4 or >12, RR >20 w/ PaCO2<32, T <36 or >38
antibiotics for GA III open fracture
cephalosporin and aminoglycoside (gent)
antibiotic added for heavily contaminated wound or farm wound
penicillin
antibiotics for freshwater wounds
fluoroquinolone (cipro or levo) or 3/4th generation cephalosporin (ceftazidime)
antibiotics for saltwater wounds
doxy and ceftazidime or a fluoroquinolone
flap and blood supply for middle third tibial wound
soleus flap, posterior tib artery
radiation dose for HO ppx
600-700 cGy 24 hours before up to 72 hours after surgery
main findings of LEAP study
absence of plantar sensation is not predictive of function, no difference in outcomes between limb salvage and amputation
operative indications for scapula fracture
angulation > 40 degrees, glenopolar angle < 20 degrees
Rockwood classification of AC injuries
1 - AC sprain, 2 - AC torn/CC sprain, 3 - AC and CC torn, 4 - clavicle through trap posteriorly, 5 - trap and deltoid detached (>100% displacement), 6 - clavicle beneath coracoid
operative indication for greater tuberosity. fracture
> 5 mm displacement
most common complication of periarticular locking plate for proximal humerus fracture
screw cutout
most reliable landmark. for judging humeral height
superior border of pec major insertion
acceptable alignment for non op treatment of humeral shaft fracture
<20 degrees anterior angulation, <30 degrees varus/valgus, <3 cm shortening
which nerves are at risk with distal interlocks in humeral nail?
radial nerve with lateral to medial, musculocutaneous with AP
first and last muscles to return in radial nerve injury
first - BR, ECRL. last - EPL and EIP
radial fracture at what distance from the articular surface is suggestive of DRUJ injury?
DRUJ unstable in 55% when radial fracture <7.5 cm from articular surface
most common cause of irreducible DRUJ
interposition of ECU tendon
factors most predictive of loss of reduction in distal radius fractures
radial shortening, dorsal comminution
APC 1
symphysis < 2.5 cm, anterior SI ligaments stretched
APC 2
symphysis > 2.5 cm, rupture of anterior SI ligaments, sacrotuberous, sacrospinous
APC 3
symphysis > 2.5 cm, rupture of anterior and posterior SI ligaments, sacrotuberous, and sacrospinous
LC classification
all have pubic rami fracture, 1 - sacral compression fracture. 2 - posterior iliac wing fracture. 3 - contralateral APC
main cause of death in LC injuries
brain injury
strongest pins for pelvic ex fix
AIIS > iliac wing, but iliac wing tolerated better
Denis classification
1 - lateral to foramen, 2 - involves foramen, 3 - medial to foramen