*RAD 230: Pelvis

Situation: A patient enters the ED with a possible hip fracture. The AP pelvis projection confirms a fracture of the right, proximal femur. The patient is unable to elevate the unaffected leg for What other lateral projection could the radiographer perform to safely demonstrate the fracture?

Sanderson

T/F: The CR is angled perpendicular to the long axis of the affected foot for the Sanderson

T

The inlet pelvis is represented by an oblique plane from ______

sacrum to pubic symphysis

Which bones fuse to form the acetabulum?

ilium, ischium, pubis

Select the correct gender to correspond with the following pelvic characteristics. More oval or heart-shaped pelvic inlet:

Male

Select the correct gender to correspond with the following pelvic characteristics. Obtuse angle of pubic arch

Female

Select the correct gender to correspond with the following pelvic characteristics. Round and large pelvic inlet:

Female

Select the correct gender to correspond with the following pelvic characteristics. Acute angle of pubic arch

Male

Which of the following positions will best demonstrate the anterior illopubic column and posterior rim of the acetabulum?

Posterior oblique Judet - upside

What CR angle must be used for an AP axial "outlet" projection for a male patient?

20-35 degree’s cephalic

T/F: The posterior oblique (Judet method) for the acetabulum requires a 10- to 15-degree rotation of the body.

F

Which of the following projections would be best for a patient with trauma to both proximal femurs (in addition to the AP pelvis)?

Modified axiolateral (Clements-Nakayama)

What CR angle is required for the AP axial, inlet projection?

40 degrees caudad

Situation: Patient enters the ED having sustained trauma to the pelvis. The patient's main complaint is about her left hip. Which of the following projections should be taken first to rule out fracture or dislocation?

AP pelvis

T/F If a patient has excessive external rotation of one foot, a fractured hip may be indicated

T

A radiograph of an AP axial "outlet" projection reveals that the obturator foramina are not symmetric. What type of positioning problem is present on this radiograph?

Rotation of the pelvis

During a repeat study of the AP axial outlet projection, both obturator foramina are symmetric but foreshortened. Which of the following positioning modifications must be performed to correct this error?

Increase cephalic CR angle

Situation: A patient enters the ED with a possible separation of the symphysis pubis due to trauma. The AP pelvis projection is incondusive for determining the extent of the injury. What Other projection can be taken toevaluate this region?

AP Axial outlet pelvis

Which bone of the pelvis forms the anterior inferior aspect?

Pubis

The sacroiliac joints are classified as joints with mobility.

Synovial, irregular gliding

two bony landmarks that are palpated using the hip localization method are the

ASIS and pubic symphysis

common condition of the femur that develops in elderly patients, leading to frequent fractures of the hip (proximal femur), is

Avascular necrosis

Which of the following pathologic conditions is a common type of aseptic or ischemic necrosis?

legg-calve perthes disease

Which of the following conditions will produce shortening of the epiphyses but widening of the epiphyseal plate?

Slipped capital femur (SCFE)

Which of the following positions will best demonstrate signs of developmental dysplasia of the hip?

AP bilateral modified cleaves

Which of the following positions will best demonstrate the posterior (ilioischial) column and anterior (iliapubic) column of the pelvis?

posterior oblique - Judets

What type of CR angle must be used for an AP axial (Taylor method) routlet' projection for a male patient?

20 to 35° cephalic

A radiograph of an AP pelvis reveals that the right iliac wing is foreshortened as compared with the left side. What specific positioning problem is present on this radiograph?

left rotation

A radiograph of an axiolateral (inferosuperior) projection of the hip reveals a soft tissue artifact seen across the affected hip. This artifact prevents a clear view of the femoral head and neck. What must the technologst do to eliminate this artifact or its effect during the repeat exposure?

increase elevation and flexion of the unaffected leg

A patiert enters the ED with a possible fracture of the inferior ischial ramus caused by trauma. The AP pelvis projection is inconclusive for determining the extent of the injury. What other projection can be taken to evaluate this region without excessive movement of the patient?

AP Axial outlet

A patient enters the ER with a possible pelvic ring fracture due to an MVA. The initial pelvis projections do not reveal any fracture or dislocation, but the ER physician is concerned about a possible right acetabular fracture Which of the following projections will best demonstrate the right acetabulum?

Posterior oblique Judets

*Define Legg-Calve-Perthes Disease.

• Affects 4/5-10 year old boys

• Common type of a aseptic or ischemic necrosis

• Involves the detenation of the femoral head

*What does CHD stand for?

Congenital Hip Dislocation

*What does DDH stand for?

Developmental Dysplasia of the Hip

*Describe the Von Rosen projection

• Evaluates for DDH

• Patient lies supine, with their legs abducted at least 45 degrees

• Inward rotation of the femora by the knees while keeping the legs straight

• CR is directed to mid pelvis