Lower extremities Flashcards
the usual cause of retroperitoneal hemorrhage secondary to pelvic fx
disruption of the venous plexus in the post pelvis
main blood supply to femoral head
ascending branch of medial circumflex
how to reduce the incidence of heterotopic ossification?
indomethacin; radiation
most common traumatic hip dislocations
post
the classic appearance of an individual w/ post. hip dislocat
- severe pain
- flex, internal rotat, adduct
position of an individual w/ ant. hip dislocat
hip in external rotat, flex, abduct
why should one reduce the hip on an urgent basis?
to minimize the risk of osteonecrosis of femoral head
almost all femoral head fx are associated w/ _______
hip dislocations
where is the weight bearing surface of femoral head?
superior to the fovea
appearance of an individual w/ displaced femoral neck fx
nonambulatory, short, ext. rotat
disadvantage of prosthetic placement vs ORIF
greater blood loss
primary total hip replacement vs hemiarthroplasty
eliminates the potential for acetabular erosion
landmarks of acetabulum (AP)
(a) iliopubic or iliopectineal(arcuate) line;
(b) ilioischial line
(c) teardrop
(d) roof of the acetabulum;
(e) anterior rim of the acetabulum;
(f) posterior rim of the acetabulum.
complications of femoral neck fx
- ORIF:nonunion, osteonecrosis, fixation failure
- Replacement: dislocation
appearance of intertrochanteric fx
short, ext. rotat, varus
