Central Ray Placement, Angles and Part Position

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Author:
Wainwright
ID:
137064
Filename:
Central Ray Placement, Angles and Part Position
Updated:
2012-02-22 20:23:28
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wainwright
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Description:
central ray angles and part position
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  1. tib/fib
    • AP dorsiflexed CR @ midpoint of leg
    • LAT knee flexed 45*CR @ midpoint of leg
    • 14x17 diagnal tabletop
  2. patella
    • PA, prone leg extended internal rotation 5* CR @ mid-patella
    • LAT, knee flexed 5-10* CR @ mid-femoropatellar joint
    • Tangential (sunrise) Inferosuperior supine knee flexed 45* CR 10-15* inferosuperior @ midpoint of femoropatella joint
    • 8x10 lengthwise bucky
  3. tunnel view (popliteal)
    • CCM PA, prone on table knee flexed 40-50* caudal CR 40-50* cuadal @ crease of knee
    • HM PA, on all 4s knee flexed 60-70* CR @ crease of knee
    • 8x10 lengthwise bucky
    • BM AP Axial, supine knee flexed 40-45* CR 40-45* cephalic @ 1/2 inch inferior to patella apex
    • 8x10 crosswise table top
  4. knee
    • AP, supine int. rotation 3-5* CR // to tibial plateau ( 5*) @1/2 inch inferior to patella apex
    • Med Obl, supine 45* in CR // to tibial plateau ( 5*) @1/2 inch inferior to patella apex
    • Lat Obl, supine CR // to tibial plateau ( 5*) @1/2 inch inferior to patella apex 45* ext.
    • LAT, knee flexed 20-30* CR 5-10* @ 1" inferior to medial epicondyle
    • 10x12 lengthwise
  5. calcaneus
    • Axial plantodorso, leg extended foot dorsiflexed CR 40* cephalic @ base of 3rd metatarsal
    • LAT, mediolateral dorsiflexed CR 1" inferior to medial malleolus
    • 8x10 crosswise table top 2 on 1
  6. ankle
    • AP leg extended dorsiflexed CR @ mid-malleoli
    • Med Obl, leg extended int. 45* dorsiflexed CR @ mid-malleoli
    • Lat Obl, leg extended ext. 45* dorsiflexed CR @ mid-malleoli
    • LAT, leg extended dorsiflexed mediolateral CR @ medial malleolus
    • AP Mortise, leg extended dorsiflexed int.15-20* CR @ mid-malleolus
    • 10x12 lengthwise 2 on 1 Table top
  7. foot
    • knee flexed planter surface flat on cassete CR 10-15* toward heel @ base of 3rd metatarsal
    • Medial Obl, 30-40* int. CR @ base of 3rd metatarsal
    • 10x12 lengthwise 2 on 1 table top
    • LAT, mediolateral dorsi flexed CR @ medial cuneform @ level of 3rd metatarsal
    • 8x10 or 10x12 table top
  8. toes
    • AP, knee flexed planter surface on IR CR 10-15* toward calcaneus @ MTP joint of affected digit
    • Medial Obl, leg 30-45* int. or ext. for 4th and 5th digits CR @ MTP joint of affected digit
    • LAT, lateromedial for digits 1-2, and mediolateral for digits 3-5 CR @ IP for 1st digit and PIP for digits 2-5
    • 8x10 crosswise

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