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Lower extremity/ WSU
Lower Extremity/WSU
| Question | Answer |
|---|---|
| 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
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