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Chap7 pelvic proj.
Procedures1. Femur/pelvic projections.
| Question | Answer |
|---|---|
| AP femur mid-distal, positioning? CR? | Rotate leg internally 5 degrees for true AP of knee. CR is perp. to mid femur. |
| Lateral femur mid/distal, positioning? How do you know its lateral? | Flex knee about 45 degrees. Anterior and posterior margins of medial and lateral femoral condyles are superimposed. |
| Lateral- mediolateral femur mid and proximal. Pt position? CR? | Lateral recumbent with affected leg down and knee bent to 45. Palpate ASIS and place upper IR margin at this level. |
| Lateral -mediolateral femur mid and proximal. Correct positioning eval? | Most of greater trochanter is superimposed by the neck of the femur, small part of greater and lesser may be visible medially. |
| AP pelvis. Pt position? CR? | females generally cannot be shielded. Separate pt legs, internally rotate lower limbs 15-20. CR midway between ASIS and symph pubis. |
| AP pelvis. Anatomy? | Pelvic girdle, L5, sacrum, coccyx, femoral heads and necks, greater trochanters. No rotation evident by symmetric wings, ischial spines, and obturator foramen. |
| Modified Cleaves method is what? | AP bilateral frog leg. |
| AP bilateral frog leg shielding? CR? | Since this is common for follow up exams for younger patients, shield male and females. CR 1 in above pubic symphysis. |
| AP bilateral frog leg pt position? | Supine arms across chest, flex both knees about 90, plantar surfaces of feet together and abduct both femora 40-45 degrees from vertical- BOTH need to be the same! Can use supports under knees. (don't need crest) |