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ch6 lower limb proj

Procedurs 1. lower limb projections

QuestionAnswer
angle on AP toes? 10-15 toward calcaneus. (perp to phalanges)
Angle on AP foot? 10 posteriorly (toward calcaneus)
AP oblique medial foot rotation degree? foot rotates medially to place plantar surface 30-40 degrees to IR
AP oblique medial rotation foot is best for visualizing what? sinus tarsi! tubercle of 5th metatarsal in profile, joint spaces of cuboid!
AP oblique latéral rotation of foot is best for? space between first and second cuneiforms. navicular well visualized.
Foot projection? tibiotalar joint is open, distal fibula is superimposed by tibia. lateral - lateromedial foot
plantodorsal (axial) projection of calcaneus. CR? 40 degrees cephalad @ base of third metatarsal.
Medial mortise joint is open and lateral is closed? AP ankle
rotation of leg and foot for mortise ankle? 15-20 degrees medial. (intermalleolar line is parallel)
No rotation of an AP projection-leg is evident by? femoral and tibial condyles in profile with intercondylar eminence centered within the intercondylar fossa.
No rotation in a true lateral projection of the leg is evident by? tibial tuberosity in profile, portion of proximal head of fibula is superimposed by the tibia.
AP knee projection- patient position? leg internally rotated 3-5 degrees (or until interepicondylar line is parallel to IR)
AP knee projection- CR? CR parallel to articular facets (tibial plateau). Average pt- CR is perpendicular to IR less than 19 cm (thin)- angle CR 3-5 caudad more than 24 cm (thick)- CR 3-5 cephalic (((from ASIS to table top))))
AP KNEE CR ANGLE Thin= Thick= thin-caudad thick- caphalad
Lateral condyles of femur and tibia are in profile. Head and neck of fibula are visualized without superimposition. AP oblique knee medial rotation
Medial condyles of femur and tibia are in profile. Fibula is superimposed by tibia proximally. AP oblique knee lateral rotation
Over rotation of lateral knee evident by? under rotation? less superimposition of fibular head by tibia= over rotated. more superimposition= under rotated.
CR angle for lateral knee? 5-7 degrees cephalad (results in superimposition of condyles)
tunnel view. prone position? camp coventry method.
Camp coventry (prone) tunnel, flexion? 40-50 degrees, support leg up. CR angled to tibial plateau
tunnel view. Holmblad method patient position? Kneeling, partially standing (straddling table or affected leg on stool or chair). Pt leans forward 20-30 degrees so knee is flexed 60-70. CR is perp to IR and lower leg
Tangential (axial or sunrise) patella. Merchant Pt position? Knees flexed at 40 over the end of the table, resting on a leg support.
Merchant position, CR? SID? CR angled 30 degrees caudad, midway between patella. (shooting downward at feet) SID=48-72.
Settegast mathod? Pt positon? CR at? SID? Tangential patella. Pt flex knee to minimum of 90 degrees. CR tangential to femoropatellar space. SID= 40.
Created by: Zoest35