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Cards In This Set
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Why is image stitching completed?
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For post surgical reviews, long limb measurements and scoliosis
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What difference in limb length (cm) is considered bad?
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>2cm
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Why are long limbs not measured from standard images?
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The anatomy is distorted by diverging beams - so the measurements will be incorrect
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Name the three methods of image stitching
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Long IR, Source Tilting or Source Translation
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What are the two treatments used for correcting long bone differences and how do they differ?
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Epiphyseodesis - Pins are put into the epiphyseal plate which stops the longer leg from growing to allow the short leg to "catch up" Ilizarov Frame - None is broken and pins are attached. A ring surrounds the limb and the distance is lengthened every day
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What are the 5 principles of trauma imaging?
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Do not remove splints or dressings, do not move the patient/limb, include both ends of long bones, 2 projections at 90 degrees, projections as close as possible to standard projections
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What is the Reverse oblique hand projection used to demonstrate?
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# of the head of the 5th MC (boxer's #)
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Where is a Torus # usually found and what supplementary projection best demonstrates this?
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Usually near the metaphysis of the distal radius (very discreet # line, buckling of cortical surface occurs) Reverse oblique wrist should demonstrate this.
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What is the routine projections for a trauma shoulder?
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AP shoulder girdle, Lateral oblique scap Y, (+/-) glenohumeral joint, (+/-) garth's shoulder
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Describe the positioning of a reverse lateral oblique shoulder projection.
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From supine - raise the affected side of the patient (until the scapula is in the scap Y position) and place the IR below the shoulder on the bed. Straight tube is used. If the patient is not elevated - angle the tube accordingly to match the angle of the scapula (IR may have to go under the trauma bed).
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What is a Maisonneuve's # and where is it commonly found?
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# of the neck of fibula which is often associated with a distal tibia #
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What are two ways you can tell if a patient may have a NOF #?
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The affected leg may be foreshortened and externally rotated.
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What is Pauwels angle?
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A classification of femoral neck #'s
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What is Garden classifications?
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Classifications of Hip #'s (four stages)
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What are the tube angles used for pelvic outlet views (female and male)?
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CEPHALIC Female: (30-45 degrees), Male: (20-35 degrees)
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