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What is one good way to localize the hip joint
find level of ASIS
and go 1inch-2in medially and 3-4in down
how do we know the patient is in a true ap projection of the pelvis
because the lesser trochanters are posterior or not visible on the radiograph
how do we take and ensure a true ap of mid and distal femur (what is the rotation)
where is the cR
rotate affected leg 5 degrees int.
cr mid way of leg and must include apex of the patella
where is the CR for an ap pelvis
what is the position of the feet
midway between ASIS and greater trochanters 2in distal to ASIS
rotated 15-20 degrees internally
how do we find the CR location of the hip and proximal femur unilateral
CR perp to mid femoral neck
1-2 in medial from ASIS and 3-4 in down
for a mediolateral projection of the femur wher is the CR and what degree is the flexion of the knee
cr is perpendicular to femur and flex knee 45 degrees and align femur to midline of table
what is evident in someone with a hip fx taking a pelvis xray
either effected leg will be rotate horizontally different than the unaffected leg take xray as is
in an ap bilateral frog leg of the pelvis the femora are abducted how many degrees
where is CR
breathing instructions
40-45 derees
cr perp ro IR 3in below ASIS
suspend respiration
for an ap unilateral hip for hip and proximal femur how much rotation is needed of the affected leg
where is the CR
15-20
CR is same as an ap pelvis
where is the CR for a axiolateral inferosuperios projection of hip and proximal femur
should rotate the leg 15-20 internally?
breathing?
where is the cassette
CR perp to midfemoral neck
yes if fx is noticeable do not attempt
hold your breath
above the iliac crests and is adjusted so it is parallel to femoral neck and perp to CR
how much abduction is needed for a unilateral forg leg for the hip and proximal femur
where is cr
breathing hold your breath
what structure does it view
45 deg
CR perp to IR at midfemoral neck
acetabulum in a lateral view
what position of the femur will show the head and neck in profile with the lesser trochanter not visible
ap pelvis
breathing instructions of all hip femur and pelvis xrays
hold your breath suspend
how much should the affected knee be flexed when xraying a lateral femur
45 deg
how much should the leg be rotated to obtain a true ap of the prox femur
15-20 internal rotation as for an ap hip
how much rotation would you need for a true ap projection of the mid and distal femur
5deg as you would for a knee
what is the angle of cr angle for and ap axial outlet projection for male and female
where is the CR
breathing?
CR cephalad female: 30-45 deg
CR cephalad male: 20-35 deg
CR 1-2in distal to superior border of pubis symphysis or greater trochanters (palpate trochanters and center down 1-2 in
hold ya breath
for an ap axial inlet projections pelvis what angle is the CR
where is the CR
CR 40 deg caudad
at midline at level of ASIS
what is the routine for a femur
ap and lateral
what is the routine for a prox hip and femur and pelvis
pelvis = ap only and bilateral frog leg
hip = ap unilateral and axiolateral projection
what are the special views of the pelvis
and hip proximal femur
ap axial inlet and outlet
hip prox femur = unilateral nontrauma frog leg (modified cleaves method)
In a pelvis radiograph what position of the leg is visible when you see the lesser trochanters in profile the lesser troc not in profile and when one leg is rotated externally than the other
lesser troc.in profile = external rotation
lesser troch not in profile = 15-20 deg internal rotation
one leg externally rotate = indicates hip fx of the pt
what is legg calve perthes disease
what does a xray show of this
what is the age group of this disease
is most common type of aseptic necrosis or ischemic necrosis
lesions are on one hip of the head and neck of femur