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45 Cards in this Set
- Front
- Back
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When would a bilateral study be used?
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Used as comparison
Used in biomechanical assessment Pediatric cases |
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When is a bilateral study okay to be used?
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Symptoms present bilaterally
For a biomechanical exam For a questionable lesion Note: for bilateral studies x-rays should be done after and in conjunction with a clinical exam. |
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To avoid over-utilization of x-rays what should always be asked?
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Always ask yourself is this x-ray really needed.
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what are some technical thoughts when considering taking bilateral images on one film vs two?
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Increase scatter with larger area
Increase exposure decrease quality |
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What is the basic tenent when considering oblique wt bearing vs non-wt bearing?
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Basic tenet is central beam should be perpendicular to subject and film.
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The aspect furthest from the film will be ____.
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magnified
magnification = source to film/ source to object 3 ft/2.5 ft = 1.2x bigger |
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What is the point of knowing what position will enhance margin image?
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They are going to be test questions!!!!!
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DP shot shows what margins?
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Medial
Lateral Anterior Posterior |
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Lateral projection shot shows what margins?
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Superior,
Inferior, anterior, posterior |
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Medial oblique shot shows what margins?
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Superomedial,
inferolateral Anterior Posterior |
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Lateral oblique foot shot shows what margins?
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Superolateral,
inferomedial Anterior Posterior |
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Sesamoid foot shot shows what margins?
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Superior,
Inferior Medial Lateral |
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Calcaneal axial foot shot shows what margins?
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Medial
Lateral Inferior |
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AP ankle shot shows what margins?
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Medial
lateral Superior Inferior |
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Mortise Ankle shot shows what margins?
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Medial
Lateral Superior Inferior (Same as AP ankle) |
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Medial Oblique Ankle shot shows what margins?
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anteromedial, posterolateral, superior, inferior
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Lateral Oblique Ankle shot shows what margins?
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Posteromedial, anterolateral, superior, inferior
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Lateral Ankle shot shows what margins?
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Anterior, Posteiror, Superior, Inferior
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What is the BEST view to see the Hallux?
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DP is best
can be seen in LO, MO, Raised lateral, non-wt lateral |
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What is the Best view to see the lesser digits?
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No single one-
DP, MO, LO, Lateral (for hammertoe view) |
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For a true DP image on adductovarus 4th and 5th, what will the shot need to be?
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True DP will be medial oblique.
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what is the best view for Sesamoids?
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Axial view is best
DP good but superimposed MO good but superimposed LO shows inferior tibial aspect of sesamoid the best Lateral= no good. |
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What is the best view for observing the 1st Met?
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Best= DP/Lat
MO good for joint view LO, FL insertion LO good for joint view, TA insertion |
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What is the best view for Observing mets 2-4?
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Best= medial oblique
DP good but superimposed Lateral no good, but different Lat- can see toe hyperextension |
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Starting with hallux, what is the BEST (only) view?
lesser digits? Sesamoids? 1st met? Met 2-4? 5th Met? Medial Cuneiform? Intermediate Cuneiform? Lateral Cuneiform? Cuboid? Navicular? Talus? Calcaneus (whole)? |
Hallux- DP
Lesser digits= DP/MO/LO Sesamoids= Axial 1st met= DP/Lateral 2-4 met= MO 5th Met= MO/DP/Lat Med Cun= DP Intmdt Cun= Modified MO Lateral Cun= MO/DP Cuboid=MO/DP/Lat Navicular= DP/Lat/LO Talus= Lateral Calcaneus= lat/MO |
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What are the best views for navicular?
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Can be seen in all views but axial
LO good for tuberosity |
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What are good views for talus?
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Best is lateral
Anterior articular facet of calcaneus= MO DP shows talar head and neck |
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what are good views for calcaneus?
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Entire bone- Lat/MO
Medial tuberosity- LO/Lat Sustentac Tali- Mo/LO, Lat, Calcaneal axial Lat tub, ant facet, bursal projection- MO |
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What are good views for distal tibia?
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All Anke views
AP is best |
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What should the offset angle be for a good mortise view?
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15 degrees, just the same as their tibial torsion, shoot accordingly.
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View?
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AP Ankle
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View
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Ap Malleoli
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View
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Calcaneal Axial
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View?
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DP/AP Calcaneal
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View?
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DP
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View?
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FF Axial
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View
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Lat Ankle
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view?
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Lateral
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View?
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Lateral
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View?
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LO Ankle
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View?
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MO
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View?
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MO
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View?
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MO
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View?
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Mortise Ankle
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What are the best views? Prepare yourself!
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