| Question | Answer |
| True or False: The pubic arch of the female is usually less than 90 degrees? | False. It is usually greater than 90 degrees. |
| what is the name of the joint found between the superior rami of the pubic bones? | Symphysis pubis |
| what size cassette is used for adult frog leg projection? | 14 x 17 crosswise |
| Common aseptic or ischemic necrosis. Legions usually involve only one hip. Predominately occurs in boys 10 -15 years of age. | Legg-Calve-Perths disease |
| the head and neck of the femure is angled how many degrees anteriorly in relation to the shaft? | 15 - 20 degrees |
| Posterior Oblique Pelvis-Acetabulum is also called? | The Judet Method |
| A technologist notices that his AP pelvis projections often demonstrate a moderate degree of rotation. What positioning technique can he/she perform to eliminate rotation of the AP pelvis projections? | Palpate both ASISs and make sure they are equal distance to the tabletop. |
| How many degrees are the femurs abducted (from vertical plane) for the bilateral frog-leg (modified cleaves method)? | 40 to 45 degrees |
| The 15 - 20 degree anterior angle of the femoral head and neck causes the true AP - Pelvis to have what type of rotation? | A 15 - 20 degree internal rotation of the femur and leg. |
| SCFE is a condition that usually occurs in? | 10 - 16 year olds during rapid growth period. |
| The upper margin of the greater trochanter is approximately how far above the level of the superior border of the symphysis pubis? | approximately 1 inch above |
| A patient enters the ER with trauma to the pelvis. The patients main concern is about her left hip. What projection should be taken first to rule out fracture? | AP Pelvis |
| The symphysis pubis provides limited movement only? | during pelvic trauma and childbirth. |
| how is the pelvis (body) positioned for a PA axial oblique (Teufel) projection? | PA 35 to 40 degree toward affected side |
| Another name for Axiolateral (inferosuperior) | Danelius-Miller Method |
| The proper name method for the unilateral frog - leg projection is the? | Modified Lauenstein and Hickey (Also known as modified cleaves method) |
| What device will improve overall visibility of the proximal hip demonstrated on an axiolateral (inferosuperior) projection? | Compensating filter |
| The lesser or true pelvis forms what? | The actual birth canal. |
| The axiolateral (inferosuperior) projection is designed for what kind of situations? | Traumatic |
| True or Fase: The gonadal dose for an AP hip with good collimation and correctly placed shielding is 3 to 5 times greater for the male than the female. | True |
| Calcification of anterior longitudinal ligament of the spinal column. Also known as "bamboo spine" is? | Ankylosing spondylitis |
| A patient enters ER with a pelvis injury due to MVA. The AP pelvis demonstrates possible defect or fracture of the acetabulum. No other fractures and patient can move comfortably. What additional projections will demonstrate possible acetabular fractures? | PA Axial Oblique (Teufel Method) or the Posterior Oblique (Judet Method) |
| An AP pelvis reveals the lesser trochanters are seen on the medial side of the femur. Which positioning modification needs to be made to prevent this positioning error? | rotate limbs 15 to 20 degrees internally |
| a fracture resulting from a severe blow to the pelvis | pelvic ring fracture |
| The lower abdominal organs as well as the fetus rest on the floor of? | The false or greater pelvis. |
| What are the two aspects of the ischium? | Body and ramus |
| True or False: Generally gonadal shielding for females cannot be used for either an AP hip or an AP pelvis due to the probability of covering pertinent anatomy. | False. You can use shielding for the AP hip but not the pelvis |
| Is Unilateral frog-leg trauma or non trauma? (Lauenstein/Hickey Method or Modified Cleaves Method) | non-trauma |
| A radiograph of an AP axial (Taylor) projection reveals that the obturator foramina are not symmetrical. What type of positioning problem is present? | Rotation of pelvis |
| Body Angles: Modified Cleaves Method (Bilateral Frog Leg) body angle is? | abduct both femora 40 to 45 degree from vertical. |
| AP Bilateral "Frog-Leg" Projection is also known as? | The modified cleaves method. |
| SCFE stands for? | Slipped capital femoral epiphysis. |
| What CR angle should be used for an AP axial (Taylor Method) projection for a male patient? | 20 to 35 degree cephalad |
| Which bones fuse together to form the acetabulum? | The ilium, ischium and pubis |
| Cephalopelvimetry exams were used in the past to measure baby's head and mother's pelvis. This exam has been replaced by? | Ultrasound, sonography |
| What projection is recommended to demonstrate the superoposterior wall of the acetabulum? | PA axial oblique (Teufel Method) |
| A patient enters ER with a possible separation of the symphysis pubis due to trauma. The AP pelvis is inconclusive for determining the extent of the injury. What other projection can be taken to evalate this region? | AP axial (Taylor) projection |
| The ischial tuberosity is approximatetly how far below the superior border of the symphysis pubis? | 1 1/2 to 2 inches below |
| On an average adult in the anatomic position the longitudinal plane of the femur is about how many degrees from vertical? | 10 degrees |
| Axiolateral Inferosuperior Projection: Hip and Proximal Femur - Trauma is also known as? | Danelius Miller Method |
| Ture or False: The RAO position for the SI joint will demonstrate the right joint? | True |
| What classification and mobility type is the symphysis pubis? | Cartligenous; amphiarthrodial |
| What is the name of the special AP axial projection of the pelvis used to assess trauma to pubic and ischial structures? | AP axial outlet projection, Taylor Method |
| On a shorter, wider person the angle of the neck to the shaft is going to be? | 110 - 115 degrees |
| do you use gonadal shielding on the male patient during an axiolateral (inferosuperior) projection of the hip? | no you can not. |
| True or False: The anterior oblique (Teufel Method) for the acetabulum requires a 10 to 15 degree obliquity. | False. Requires 34 to 40 degree obliquity. |
| Which of the following modalities will best demonstrate a possible pelvic ring fracture? | A CT Scan |
| PA Axial Oblique Projeciton: Acetabulum | The Teufel Method |
| A malignant tumor of cartilage, usually affecting men over 45 is called? | Chondrosarcoma |
| Unilateral "frog-leg" Projection-Mediolateral: Hip and proximal Femur is also called? | Modified Cleaves Method |
| True or False: During an axiolateral (inferosuperior) projection of the hip the male patient recieves more than 20 times the gonadal dose than a female. | True |
| Taylor Method (AP Axial "Outlet") CR angle is? | 20 to 35 degree cephalad for male, 30 to 45 degree cephalad for female |
| Where is the CR placed for an AP projection of the pelvis? | Midway between ASISs and symphysis pubis |
| What classification and mobility type is the union of acetabulum? | Cartligenous; synarthrodial (in adults) |
| A unilateral frog leg radiograph shows greater trochanter superimposed over femoral neck. Concern of femoral neck fracture, what can Tech do to improve visibility of femoral neck region? | angle CR 20 to 25 degree cephalad |
| Body Angles: Unilateral Frog Leg (Modified Lauenstein/Hickey Method). Angle leg | 45 degree from vertical |
| Which ionization chamber in an AEC system should be selected for an AP projection of the hip? | The center chamber only |
| A radiograph of an LPO projection for SI joints reveals that the ilium is superimposed over the involved SI joint. What type of positioning error is present? | Excessive rotation or obliquity. |
| How many bones does the pelvic girdle contain? What are they? | Two. The right and the left hip bone. |
| A non-trauma patient comes to radiology with history of chronic pain of the right hip. The patient is ambulatory and hasn't had previous radiographs taken. What routine would be best suited for this patient? | AP pelvis and lateral frog-leg projections of the right hip. |
| The two bony landmarks that are palpated for hip localization are? | the ASIS and symphysis pubis. |
| A radiograph of an AP pelvis reveals the lesser trochanters are not visualized. this pelvis was performed for non-traumatic reason. what should be done to correct this problem on repeat? | Nothing. Accept the radiograph and do not repeat. |
| Which imaging modality is most sensitive in diagnosing early signs of metastatic carcinoma of the pelvis? | nuclear medicine |
| Another name for the Modified axiolateral | Clements-Nakayama Method |
| What are the characteristics of the female pelvis? | Wider, more shallow, more flared
obtuse angle (>90)
more round, larger |
| Using the ASIS and symphysis pubis landmarks, the femoral head can be located? | 1 1/2 inches distal/below the midpoint of the imaginary line between the two bony landmarks. |
| How much obliquity of the body is required for the Judet method? | 45 degrees |
| Which bone of the pelvic girdle forms the anterior inferior aspect? | Pubis |
| What positioning error has occured if the left iliac wing is elongated on an AP pelvis? | rotation toward the left side. |
| Avusion fractures occur? | in adolescent athletes who experience a sudden forceful or unbalanced contraction of the tendinous and muscular attachments. |
| Is modified cleaves (bilateral frog-leg) trauma or non-trauma | non-trauma |
| True or False: The Lauenstein/Hickey method for the unilateral frog-leg will produce distortion of the femoral neck? | True |
| PA Axial Obique Projection - Acetabulum is also known as? | Teufel Method |
| Is exam for Anterior pelvic bone? | trauma |
| AP Axial "Outlet Projection" is also known as? | The Taylor Method |
| A common condition of the femur that elderly patients develop that leads to frequent fractures of the hip is? | Avascular necrosis or proximal femur hip fractures. |
| What are two additional terms for the hip bones? | ossa coxae and innominate bones |
| DDH are hip dislocations that are present? | at birth |
| What is the optimal amount of hip abduction applied for the unilateral "frog-leg" projection to demonstrate the femoral neck without distortion? | 20 to 30 degrees from vertical |
| True or False: Gonadal shielding can be used for males for the axiolateral/inferosuperior projection of the hip? | False |
| The greater trochanter is located? | superiorly and laterally to the femoral shaft and is palpable as a bony landmark. |
| A very young child comes to the radiology department with clinical history of DDH. What is the most common positioning routine for this condition? | AP Pelvis and bilateral frog-leg (Modified Cleaves Method). |
| During delivery the baby's head first travels? | Through the inlet to midcavity to outlet. |
| The modified axiolateral requires the CR angle to be? | posteriorly 15 to 20 degrees from horizontal. |
| An axiolateral/inferosuperior projection reveals the posterior aspect of the acetabulum and femoral head were cut off. What needs to be done on the repeat exam to better define this region? | If possible elevate patient 2" by placing sheets or blanket under the pelvis. |
| What position best demonstrates the superior and posterior rim of the acetabulum? | Anterior oblique (Teufel method) |
| How much obliquity of the body should be utilized for the anterior oblique projections for the sacroiliac (SI) joints? | 25 to 30 degrees |
| How many of the hip/pelvis projections require CR angle? Which ones? | 4 projections. The Taylor Method (AP Axial "outlet"), AP Axial "Inlet", Teufel Method (PA Axial Oblique), Clements-Nakayama (Modified Axiolateral). |
| Body Angles: Teufel Method (PA Axial Oblique) body angle is? | 35 to 40 degree anterior oblique, affected side down. |
| What type of pathologic feature is best demonstrated with the Judet method? | Acetabulum fracture |
| The ilium, ischium and pubis are seperate bones in children but fuse together during middle teens. This are of fusion is called? | Acetabulum |
| which bony landmark is found on the most inferior aspect of the posterior pelvis? | Ischial tuberosity |
| Is Modified axiolateral (Clements-Nakayama) trauma or non-trauma | trauma |
| How much is the cassette tilted for the modified axiolateral projection of the hip? | 15 degree from vertical |
| The use of 80kVp rather than 90 for an AP pelvis will have what affect on the patient dose? | Will increase the dose by about 30% |
| The angle of the neck to the shaft on the average person is? | 125 degrees with a + or - variance of 15 degrees |
| What positioning error has occured if the left obturator foramen is more open than the right side on an AP pelvis? | rotation of pelvis toward the right side |
| What is the intertrochanteric crest? | The junction where trochanters are joined posteriorly. |
| Axiolateral Inferosuperior Projection: Hip and proximal femur-trauma is also called? | Danelius-Miller Method |
| The ischium consists of? | The body, the ischial tuberosity, the ischial spine, the lesser sciatic notch and the ramus of the ischium. |
| The head of the femur is rounded and smooth for articulation with the hip bones. Near the center is a depression or pit called? | The fovea capitis. |
| Posterior Oblique Pelvis - Acetabulum is also known as? | The Judet Method |
| True or False: Both joints must be included in an AP and lateral projection of the femur even if a fracture of the proximal femure is suspected? | True |
| What are the characteristics of the male pelvis? | Narrower, deeper, less flared.
Acute angle (<90)
is more oval or heart-shaped |
| Another name for PA axial oblique for acetabulum? | Teufel Method |
| Each hip bone is composed of three divisions. What are they? | Ilium, ischium and pubis. |
| A radiograph from a modified axiolateral projection reveals excessive grid lineso n the image which also appears underexposed. What can be done to avoid this problem during the repeat exposure? | Make sure CR is centered to midline of cassette and the face of the cassette is perpendicular to CR. |
| What type of CR angle is used for a PA axial oblique (Teufel) projection? | 12 degree cephalad |
| What bony structure cannot be palpated? | The ischial spine |
| Modified Axiolateral-Possible Trauma Projection: Hip and proximal femur is also called? | Clements-Nakayama Method |
| PELVIS: The pelvis consists of four bones, what are they? | Two hip bones (ossa coxae, also called innominate bones) one sacrum, and one coccyx. |
| The ilium consists of? | The iliac crest, the ala or wings, the Anterior Superior Iliac Spine (ASIS), the Posterior Superior Iliac Spine (PSIS), the anterior inferior iliac spine, the posterior inferior iliac spine, the greater sciatic notch and about 2/5 of the acetabulum. |
| Gonadal shielding of the male patient for the AP pelvis radiograph requires that the shield NOT extend above the level of the: | Inferior border of the pubis. |
| AP Bilateral "frog-leg" projection: Pelvis is also called? | Modified Cleaves Method |
| The pubis consists of? | The body, the superior ramus of pubis, the inferior ramus of pubis, the obturator foramen, the symphysis pubis. |
| A patient with hip pain from a fall enters ER. the physician orders a left hip study. When moved to the radiographic table, the patient complains very loudly about pain in hip. Which positioning routine should be used on this patient? | AP pelvis and axiolateral/inferosuperior projection. |
| How is the unaffected leg positioned for the axiolateral hip projection? | flexed and elevated to prevent superimpositon over the affected hip |
| True or False: A patient with excessive external rotation of the foot may indicate a hip fracture. | True |
| A radiograph of an axiolateral (inferosuperior) projection reveals there is excessive amount of grid lines present. What will correct this problem? | Keep cassette perpendicular to CR. |
| AP Axial "outlet" projection: Pelvis is also called? | Taylor Method |
| What classification and mobility type is the sacroiliac joint? | Synovial; amphiarthrodial |
| Is Danelius-Miller Method for Trauma or non-trauma?(axiolateral/inferosuperior hip) | Trauma |
| Which special projection of the hip demonstrates the anterior and posterior rims of the acetabulum and the ilioischial and iliopubic columsn? | Judet Method, posterior oblique projections of acetabulum |
| What projection would be ideal for a patient with trauma to both proximal femurs (in addition to AP pelvis)? | Modified axiolateral (Clements-Nakayama Method) |
| An AP axial projection for anterior pelvic bones reveals that the pubic & ischial bones are not elongated. The tech used CR angle of 20 to 30 degrees cephalad for a female patient. What error was made? | The CR angle for females is 30 to 45 degrees cephalad. 20 to 30 degrees is for a male patient |
| Which ionization chamber(+s) should be used when using AEC for an AP pelvis projection | Upper right and left chambers |
| Teufel Method (PA Axial Oblique) CR angle is? | 12 degree cephalad |
| A radiograph of an AP pelvis reveals that the right iliac wing is foreshortened as compared with the left side. What specific postitioning problem is present on this radiograph? | left rotation |
| Request for right hip study. the patient is from extended care facility confused about cause of injury. An AP pelvis is taken, the lateral frog-leg causes severe pain. What other projection can be preformed instead of lateral frog-leg? | the axiolateral/inferosuperior projection instead. Also called (Danelius Miller Method) |
| Body Angles: AP Pelvis | rotate both femora and lower leg internally 15 to 20 degrees. |
| What projection provides the greatest amount of gonadal dose for a male patient (without the use of shielding). | Axiolateral/inferosuperior projection (Danelius-Miller Method) |
| An imaginary plane that divides the pelvic region into the greater and lesser pelvis is called? | the brim of pelvis or pelvic rim |
| Why must the lower leg be rotated 15 to 20 degrees internally for AP hip projections? | To place femoral neck parallel to the film. |
| Modified Axiolateral - Possible Trauma Projection is also called? | Clements - Nakayama Method. ( Katie's NACHO MAMA Method) |
| Where is the central ray placed for a unilateral frog leg projection? | mid femoral neck |
| Patient enters ER with possible bilateral fractured hips. What routine should be performed? | AP Pelvis and the modified axiolateral inferosuperior projection for both hips. Also known as the Clements-Nakayama Method. |
| A plane through the brim of the pelvis divides the pelvic area into how many cavities? | Two. The false or greater pelvis and the lesser or true pelvis. |
| With SCFE the epiphysis appears ? and the epiphyseal plate appears ? | Shorter; wider with smaller margins. |
| Another name for the AP axial "outlet" projection? | Taylor Method |
| Another name for the Posterior oblique for acetabulum? | Judet |
| Clements-Nakayama (Modified Axiolateral) CR angle is? | posteriorly 15 to 20 degrees from horizontal. |
| Body Angles: Judet Method (Posterior Oblique) body angle is? | 45 degree posterior oblique, affected side up. |
| What classification, mobility type and movement type is the hip joint? | Synovial; diarthrodial, spheroidal (ball and socket) |
| The proximal femur consists of four essential parts, what are they? | The head, the neck, the greater and lesser trochanters. |
| What CR angle is required for the "outlet" projection (Taylor Method) for a female patient? | 30 to 45 degree cephalad |
| The longest and strongest bone in the entire body is? | The femur bone. This bone and the associated joints are a frequent source of pathology when trauma occurs. |
| A radiograph of axiolateral projection of the hip reveals soft tissue seen across the affected hip. Artifact prevents clear view of femoral head and neck. What must the tech do to eliminate this artifact? | Increase the elevation and flexion of unaffected leg. |
| AP Axial "Inlet" CR angle is? | 40 degrees caudad. |
| True or False: the male pelvis is more round than a female | False |
| Where is central ray placed for AP bilateral frog leg projection? | 3 inches below ASIS and 1 inch superior to sympnysis pubis |
| DDH stands for? | Developmental Dysplasia of the Hip. |
| A young patient comes to the radiology department with chronic pain near the ASIS. She is an active athlete who was injured running hurdles. Her physician suspects avulsion fracture. Which position may best diagnose this condition? Will kV change? | AP pelvis and possibly posterior oblique (Judet Method). Decrease kV to 65 or 70. |
| What CR angle is used for the Judet method? | No CR angle |
| True or False: Any orthopedic device or appliance of the hip should be seen in its entirety on an AP hip radiograph? | True |
| The acetabulum is a deep, cup-shaped cavity that accepts the head of the femur to form what? | The hip bones |
| Only a small part, if any, of the lesser trochanter will be visible on a well postitioned axiolateral (inferosuperior) lateral hip. | True |
| Now referred to as Developmental Dysplasia of the Hip. | congenital dislocation |
| Another name for Bilateral or Unilateral Frog-Leg | Modified Cleaves Method
Unilateral is also called Modified Lauenstein/Hickey Method |
| What is the amount of abduction of the femurs recommended for an AP bilateral frog-leg projection? | 40 to 45 degrees. |
| Maligancy spread through circulatory or lymphatic systems. Common metastatic sites are the skull, spine, ribs, pelvis. | Metastatic carcinoma. |
