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Chapter 7 Self test
Femur and Pelvic Gridle
| Question | Answer |
|---|---|
| List the four bones of the Pelvis. | Left hip bone, Right hip bone, Sacrum and Coccyx |
| List the three divisions of the hip bone. | Ilium, Ischium, and Pubis. |
| Innominate Bone is another name for | One half of the pelvic gridle, Hip bone, and Ossa Coxae. |
| What is the largest foramen in the body? | Obturator Foramen |
| Which of the following landmarks is not a palpable bony landmark? Greater trochanter, Lesser trochanter, Ischial tuberosity, ASIS. | Lesser Trochanter |
| What are the two aspects if the ischium | Body and Ramus |
| What is the name of the imaginary plane that separates the false from the true pelvis | Brim of the pelvis (pelvic brim) |
| Lesser pelvis, is a false pelvis or true pelvis? | True Pelvis |
| Supports the lower abdominal organs, is a false pelvis or true pelvis? | False Pelvis |
| Formed primarily by the ala of the ilium, is a false pelvis or true pelvis? | False Pelvis |
| Cavity, is a false pelvis or true pelvis? | True Pelvis |
| Greater Pelvis, is a false pelvis or true pelvis? | False Pelvis |
| Forms the actual birth canal | True Pelvis |
| Found below the pelvic brim | True pelvis |
| The pubic arch angle on an average male pelvis is an (acute or obtuse) angle that is (greater than or lesser than) 90 *? | Acute, lesser than |
| Heart - shaped (oval ) inlet is a characteristic of a male or female pelvis? | Male |
| Acute pubic arch (less than 90*) is a characteristic of a male or female pelvis | Male |
| iliac wings that are more flared is a characteristic of a male or female pelvis | Female |
| obtuse pubic arch (greater than 90*) is a characteristic of a male or female pelvis | Female |
| Larger and more rounded inlet is a characteristic of a male or female pelvis | Female |
| Iliac wings that are less flared is a characteristic of a male or female pelvis | Male |
| Which of the following structures is considered to be more posterior? Ischial spine, ASIS, symphysis pubis, acetabulum? | ischial spines |
| The small depression near the center of the femoral head where a ligament is attached is called the? | Fovea Capitis |
| Which of the following joints are synovial joint but with amphiarthrodial mobility? union of the acetabulum, hip joint, symphysis pubis, sacroiliac joints. | Sacroiliac Joints |
| Which of the following devices should be used for an axiolateral (inferosuperior) projection of the hip to equalize density (brightness) of the hip region? grid, high-speed IR, small focal spot, compensating filter. | Compensating filter |
| Which modality is used to assess joint stability during movement of the lower limbs on an infant? | Sonography |
| A geriatric patient with an externally rotated lower limb may have | Fractured proximal femur |
| Which pathologic indication may result in the early fusion of the sacroiliac (SI) joints? | Ankylosing Spondylitis |
| Clinical Indications: Usually consists of numberous small lytic lesions | Metastatic Carcinoma |
| Clinical Indications: Increased hip joint space and misalignment | DDH |
| Clinical Indications: Bilateral radiolucent lines across bones and misalignment of SI joints | Pelvic ring fracture |
| Clinical Indications: Early fusion of SI joints and "Bamboo Spine" | Ankylosing spondylitis |
| Clinical Indications: Epiphyses appear shorter and epiphyseal plate wider | SCFE |
| Clinical Indications: Hallmark sign of spurring and narrowing of joint space | Osteoarthritis |
| radiographic signs indicates that the proximal femurs are in position for a true AP projection | Limited visibility of the lesser trochanter in profile |
| What is another term for the outlet of the true pelvis? | Inferior Aperture |
| The typical physical sign for a possible hip fracture is the ___________ of the involved foot | External Rotation |
| Which projection or method is often performed to evaluate a pediatric patient for congenital hip dislocation? | Bilateral modified cleaves |
| What type of central ray angle is required when using the AP axial for outlet (Taylor Method) for a male patient? | 20 to 35* cephalad |
| How much is the pelvis and / or thorax rotated for a PA axial oblique (Teufel Method) for acetabulum? | 35 to 40 toward affected side |
| What type of CR angle is required for the PA axial oblique (Teufel Method) for acetabulum? | 12 * cephalad |
| T/F: the unilateral frog-leg projection (modified Cleaves Method) is intended for nontraumatic hip situations. | True |
| T/F: Centering for the AP pelvis projection is 1 inch, or 2.5 cm, superior to the symphysis pubis. | False, Midway between ASIS and symphysis pubis. |
| What type of CR angle is required for the Judet method? | None. CR is perpendicular |
| T/F: The modified axiolaeral (clements-Nakayama Method) is classified as a nontraumatic lateral hip projection. | False, Trauma Projection. |
| Which projection or method is used to evaluate the pelvic inlet for possible fracture? | AP axial lateral |
| An initial AP pelvis radiograph reveals possible fractures involving the lower anterior pelvis. The ER physician asks for another projection to better demonstrate this area of the pelvis. The patient is traumatized and must remain supine. Which projection | The AP axial "outlet" projectioto n (Taylor Method) will elongate the pubis and ischium and define the region more completely. |
| A unilateral frog-leg (Modified Cleaves) demonstrate foreshortening of the femoral necks. The physician is unsure if there is a defect within the anatomic neck. What can be done to minimize distortion of the neck during a repeat exposure? | Only abduct the femur 20* to 30* from the vertical rather than 45* to minimize distortion of the femoral neck. |
| A radiograph of an AP hip reveals that the lesser trochanter is not visible. Should the technologist repeat the projection? | No, it is an acceptable image because the lesser trochanter should not be visible at all or only minimally on a well-positioned AP hip projection. |
| A young patient with a clinical history of SCFE comes to the radiology department. Which projections are most often taken for this condition | AP pelvis and bilateral "Frog-Leg". |
| A radiograph of an AP projection of the pelvis demonstrates that the left obturator foramen is narrow and the right one is open. what is the specific positioning error present on this radiograph | Rotation of pelvis toward the patient's left. The elevated or upside (right) obturator foramen will become more open as compared to the opposite or downside. |
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