Hip Dislocations

Question 1

Hip dislocations Age

Answer 1

young people

Question 2

Etiology

Answer 2

high energy trauma

Question 3

MOI Posterior dislocations

Answer 3

due to axial force in line with the femur with an ADDUCTED hip e.g. dashboard injury
MORE COMMON THAN ANTERIOR DISLOCATION

HIGH INCIDENCE OF ACETABULAR Fx

Question 4

MOI Anterior hip dislocations

Answer 4

ABDUCTION and external rotation forces
Anterioinferior - obturator - hip is flexed @ time of injury
Anteriosuperior - pubic -hip is extended

Question 5

Presentation of posterior dislocation

Answer 5

patient is flexed
adducted
internally rotated
acetabulum is most likely fx

Question 6

presentation of anterior dislocation

Answer 6

patient is externally rotated
flexed
abducted
DONT CONFUSE WITH HIP Fx - external rotation and short

Question 7

Hip fx and hip dislocations

Answer 7

patient will have groin pain

Question 8

Tx of hip dislocations

Answer 8

requires emergent reduction
put it back in right away
make sure complete paralysis is done

Question 9

why do you want to put the dislocated hip back in right away?

Answer 9

prevent sciatic nerve damage and resultant foot drop
PROLONGED DISLOCATION LEADS TO OSTEONECROSIS OF THE FEMORAL HEAD. EVEN IF THE ARTERIES THAT SUPPLY THE HEAD IS STILL INTACT, THEY COULD BE KINKED OR CUT OFF BY THIS POSITION

Question 10

CT of a dislocated hip

Answer 10

should never see it because the hip should be reduced before radiographed

Question 11

Tx of hip dislocation

Answer 11

closed reduction or an open reduction

Question 12

closed reductions

Answer 12

always attempted first unless there is an ipsilateral hip fx

Question 13

Tx of acetabulum fx

Answer 13

plates are placed