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Lower extremity/ WSU

Lower Extremity/WSU

QuestionAnswer
Degree of CR angulation for plantodorsal Calcaneus (axial)? 40 degrees cephalic
Where does the central ray enter for the axial calcaneus (plantodorsal)? base of the third metatarsal
What is the degree of tube angulation for the "coalition method" calcaneus? 45 degrees caudad
The CR should enter where for the coalition method? Base of the fifth metatarsal
How much CR angulation is used for an AP ankle? None
What is the position of the part for a lateral ankle? mediolateral
The ankle should be rotated how many degrees medially for an oblique ankle (medial rotation)? Mortise joint? 45 degrees, 15-20 degrees
An AP tib/fib should show which structures? Ankle and knee joints in profile, moderate overlap of prox/distal tib fib articulations
Which way is the part rotated for a lateral tib/fib? mediolateral
A patient with a measurement of less than 19 cm between the ASIS and tabletop should be shot with what degree of CR angulation for an AP knee? 3-5 degrees caudad
A patient with a measurement of greater that 24 cm from the ASIS to the tabletop is shot with a _______________ CR angulation. 3-5 degrees cephalad
How is the patient positioned for a PA projection of the knees? prone, toes resting on the tabletop
What is the degree of CR angulation for a PA projection of the knee? none
What is the amount of knee flextion used for a lateral projection of the knee? 20-30 degrees (opening up the joint to the max)
_____________ CR angulation is used for the lateral projection of the knee. 5-7 degrees cephalad
What is a proper GENERAL technique for a lateral knee? (performed tabletop) 60 KV @ 6mAs
What is a proper GENERAL technique for an AP projection of the knee? (performed in the bucky) 60 KV @ 16mAs
____________CR angulation is needed for an AP oblique projection of the knee. (patient measures 21cm from the ASIS to tabletop) NO/zero
The camp-coventry method is used to demonstrate what? intercondylar fossa
The patients knees should be flexed to what degree for the camp-coventry method? 40-50 degrees
The CR should be angled how many degrees for the camp-coventry method? 40-50 degrees caudad (depending on the amount of knee flexation)
The CR should be angled how many degrees for a merchant method? 30 degrees caudad
What is the amount of knee flextion for the merchant method projection? 40 degrees
What size cassette should be used for bilateral merchant knees? 14X17
What is the degree of CR angulation for the settgast method (tangential patella)? Patient is done prone with knee flexed ninety degrees none
When should you not perform a settegast projection of the tangential patella? present of transverse patella fx
What is weight bearing knees done for? Degenerative arthritis
What is the degree of limb rotation for an AP pelvis? 15-20 degrees internally
CR for an AP pelvis? 2 inches above the pubic symphysis
Technique used for an AP pelvis? 75KV @ 40 mAs
Technique used for a lateral or oblique pelvis? 75-80KV @ 60-80 mAs
What is the patient angulation of the judet view of the pelvis? 45 degrees, affected side up
What does the judet view of the pelvis demonstrate? posterior wall of acetabulum and oblique pelvis
CR angulation for an outlet pelvis? 35 cephalic
What does the outlet pelvis demonstrate? elongation of the pubis and ischial rami
CR entrance of the outlet pelvis? 1 inch above symphysis
CR angulation of the inlet pelvis view? 25 degrees caudad
CR entrance for the inlet pelvis? At the level of the ASIS
What does the inlet pelvis demonstrate? pubis and ischial rami almost completely superimposed
CR entrance for the chassard-lapine view of the pelvis? centered at the lumbosaral region at the greater trochanters
Patient positioning for chassard-lapine? Patient seated at edge of table, bent to grab ankles (butt shot!)
What does the chassard-lapine demonstrate? The relationship of the femoral head to the acetabulum
What is the modified cleaves method? frog leg lateral
CR entrance for the modified cleaves method? 1 inch above the pubic symphysis bilateral, ASIS unilateral
What size cassette is used for an AP hip? 10x12
pt position for AP hip? supine, leg flexed 15 degrees internally
Patient position for launstein projection? pt is turned toward affected side (either LPO or RPO), knees are flexed, the affected femur should lie as flat as possible on table
Should the launstein projection be used for trauma cases? No.
The clement-nakayama patient position? Patient is supine with affected side near edge of table, legs straight.
IR and CR angulation for clement-nakayama? IR angled 15 degrees under patient at level of ASIS, 15 degrees cephalic (CR)
The clement-nakayama demonstrates what? lateral hip; acetabulum and proximal femur (hip joint)
Danelius-miller is also known as? cross-table hip
General technique for a danelius-miller hip? 75-80KV @ 60-80 mAs
CR entrance for danelius-miller hip? Through the femoral neck, perpenedicular to the cassete (which is at the iliac crest)
Patient position for danelius-miller? supine, unaffected leg flexed (out of way of film), affected leg turned in 15 degrees internally
CR entrance for a PA projection of the anterior pelvic bones? midsagittal plane of the greater trochanters
CR angulation used for a male for Taylor method anterior pelvic bones? 20-35 degrees cephalad
CR angulation used for a female for Taylor method anterior pelvic bones? 30-45 degrees cephalad
CR entrance for Taylor method projection of anterior pelvic bones? 2 inches distal from the pubis symphysis
What cassette size is used for an AP/lateral femur? 14x17 (10x12 if additional view needed)
General technique for a femur (including the hip)? 75 KV @ 40 mAs
General technique for a femur (including the knee tabletop/bucky)? 60 KV @ 6 mAs/65KV @ 16 mAs
Amount of patient angulation for an AP proximal femur? 15 degrees internally
Amount of patient angulation for an AP distal femur? 5 degrees internally
CR entrance for AP proximal femur? level of the greater trochanter
CR entrance for AP distal femur? 1/2 inch below the apex of the patella, cassette should end 2 inches below knee joint
CR entrance for LATERAL proximal femur? greater trochanters, light should start two inces above the crest
CR entrance for LATERAL distal femur? light should end two inches below knee joint
General technique for tib/fib (either lateral or AP)? 65KV @ 5-6 mAs
Cassette size used for a foot? 8x10 or 10x12
General technique used for a foot? 55KV @ 5 mAs
What is the entrance of the ray for an AP foot? dorsoplantar
What is the amount of tube angulation for an AP foot? 10 degrees cephalad
CR entrance for an AP foot? base of 3rd metatarsal
What does the AP foot projection demonstrate? tarsal/metatarsal joint spaces
Patient angulation for oblique foot? 30 degree medial angulation of entire leg
CR entrance for oblique foot? base of 3rd metatarsal
What does the oblique projection of the foot demonstrate? interspaces around cuboid and surrounding bones plus the sinus tarsi
CR entrance for lateral foot? base of the metatarsals
what projection is used for a lateral foot? mediolateral
Standing feet lateral are done bilateral for what reason? they are done for comparison
CR entrance for standing feet lateral? horizontal and perpendicular to the base of the 5th metatarsal
Standing feet laterl projection is done to see? longitudinal arches
composite-dorsoplantar is one exposure or two? two
CR angulation for 1st projection of the composite-dorsoplantar? 15 degrees to base of 3rd metatarsal
CR angulation for second projection of the composite dorsoplantar? 25 degrees to the posterior surface of the ankle
Patient position for first exposure of composite dorsoplantar? Tube in front of patient, unaffected foot is behind
Patient position for second exposure of composite dorsoplantar? Tube is behind patient, unaffected foot is in front
What does the composite dorsoplantar demonstrate? Composite of entire foot w/o superimposition of tibia
Kite mehtod demonstrates what? Congential club foot
CR for AP kite method? perpendicular to the tarsals
Patient position for the AP kite method? Patient supine, knees flexed, feet flat on cassette, hold knees together to be vertical
CR entrance for Holly method sesmoids? perpendicular and tangential to first MPJ
Cassetter size used for sesmoids? 8x10
Patient position for Holly method sesmoids? supine, leg extended and foot is dorsiflexed
General technique for sesmoids? 55KV @ 5 mAs
Lewis method sesmoid projection demostrates what? sesamoids free of superimposition
Patient position for Lewis method sesmoids? prone, foot resting on first digit
The medial oblique projection of the foot best demostrates what? The cuboid and its related articulations
Created by: tiffandbrit