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Positioning
Ankle, Tib/Fib, Knee
| Question | Answer |
|---|---|
| When you dorsoflex your ankle the CR angle is | Perpendicular |
| What is the CR angle for the lateral calcaneus | Zero/Perpendicular |
| What is the lateral projection for calcaneus | mediolateral |
| The CR angle for an AP ankle is | Zero |
| Where do you center for AP ankle | midway point between malleoli |
| What is not demonnstrated in the AP ankle | Ankle mortise |
| How do you prevent lateral rotation on the lateral projection of the ankle | dorsoflex |
| What is the CR angle for the lateral projection of the ankle | zero |
| Where does the CR enter for ankle | medial malleoli |
| Where is the fibula located on a properly positioned lateral ankle | posterior half of the tibia |
| What is the essential projection on a tib fib | AP oblique ( medial rotation), AP oblique 15-20 degree rotation mortise |
| All projections of the ankle, leg, and foot should be | Rotated |
| The mortise is made of | lateral malleolus of fibula, inferior surface of tibia, medial malleolus of tibia |
| The fibula articulates with the tibia at | the proximal end and distal end |
| For the calcaneus you should do the projection | AP axial plantodorsal |
| The axial calcaneus should be where to the IR | perpendicular |
| What is the degree for oblique ankle for the mortise | 15-20 degrees |
| When the malleoli is parrallel with the IR you are positioned for the | Mortise |
| What is the ankle projection that clearly demonstrates the mortise in profile | AP oblique (medial rotation) 15-20 degrees or internal |
| What is the CR angle for the AP oblique projection of the ankle | zero |
| How many degrees is the ankle rotated in AP oblique | 45 degrees |
| What is the projection that clearly demonstrates the joint space between the talus and malleoli | 15 to 20 degrees mortise |
| What is the projection of the ankle with a inversion or eversion injury | Stress |
| What is the specific projection of the ankle to diagnose tear medial lateral ligaments | AP eversion inversion Stress |
| What is the CR angle for AP leg | Zero |
| How do you position an AP projection of the leg for femoral condyle position | parrallel with the IR |
| With the AP projection of the leg you see | ankle joint, knee joint, and tib fib overlap |
| What is the collimation for AP leg | 1 to 1 1/2 inches all sides |
| If the leg is too long for 1 IR which joints should be included | the joint closest to the lesion |
| What objects should be available in the room for exams of the lower limb | sandbags, wedges, pullstrap, towels |
| What should be demonstrated in the lateral leg | knee joint, ankle joint |
| Where is the CR centered for AP knee | 1/2 inch below patella, apex |
| When the knee is properly positioned for AP the patella will lie | slightly medial |
| When the ASIS to tabletop is 19-24 cm your CR angle will be | zerio |
| When the ASIS to tabletop is less than 19-24 cm your CR angle will be | 3 to 5 degrees caudad |
| When the ASIS to tabletop is more than 19-24 cm your CR angle will be | 3 to 5 degrees cephalad |
| How much do you flex the leg for the lateral knee | 20-30 degrees |
| How do you insure the knee is in proper position for the lateral | the patella is perpendicular to the IR, femoral epicondyles are perpendicular, knee is flexed 20-30 degrees |
| What is the CR angle for lateral knee | 5 to 7 degrees cephalad |
| What projection of the knee demonstrates narrowing of the joint spaces | AP weight bearing both knees |
| You can see the Valgus Varus with what | AP knee weight bearing |
| What is the CR angle for AP bilateral weight bearing knee | zero |
| How much is the limb rotated for the AP oblique projection of the knee | 45 |
| What is the CR angle for AP oblique knee | depends on ASIS to tabletop |
| What is clearly demonstrated in the AP oblique medial rotationn | tib fib articulation |
| The superior portion of the calcaneus groove, calcaneus sulcus, inferior talus groove, salcus tali you can see what | sinus tarsi |
| What bone lies directly anterior to the talus | navicular |
| What articulates with the talus | navicular, tib/fib, calcaneus |
| What are the 2 flat superior surfaces of the tibia | tibial plateaus |
| The anterior surface of the tibia is the | tibial tuberosity |
| The proximal end of the tibia has two processes called | condyles (medial and lateral) |
| The tibial plateau slope is | posteriorly 10 to 20 degrees |
| When the femur vertical medial condyle is lower than the lateral condyle, how many degrees difference is between the two | 5 to 7 |
| Which anatomical part must be identified on the lateral knee in order to identify under/over rotation | adductor tubercle |
| What are the circular fibrocartilage discs or pads that lie onn the tibial plateau | meniscus |
| The CR is directed where for the lateral calcaneus | 1 inch below the medial malleoli |
| The CR is directed where for the AP projection of the knee weight bearing | 1/2 inch below apex |
| How much is the knee flexed in the lateral projection | 20 to 30 degrees |
| The ankle mortise joint is a | synovial hinge |
| Which bone in the leg does not bear body weight | fibula |
| What is incomplete evulsion separation of the tibial tuberosity | osgood schlatter disease |
Created by:
bmiller1226