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patella positioning

patella positioning and structures for comp

QuestionAnswer
Pt position PA patella pt prone, patella parallel to IR, (laterally rotate heel 5-10 degrees)
Pt position lateral patella pt lays on affected side, knee flexed 5-10 degrees, femoral epicondyles and patella perpendicular to IR
CR entry PA patella perpendicular entering the mid popliteal area
CR entry lateral patella perpendicular entering the mid patellofemoral joint
Pt position oblique patella pt prone 45-55 degree part obliquity, knee bent 5-10 degrees
CR entry oblique patella perpendicular, exiting the patella
Pt position Hughston method tangential patella pt prone, knee flexed to form 50-60 angle from tib-fib to table.
CR entry Hughston method tangential patella 45 degrees cephalad through patellofemoral joint
Pt position Settegast method tangential patella pt prone or supine, knee bent as much as possible or until patella is perpendicular to the IR
CR entry Settegast method tangential patella perpendicular to the patellofemoral joint space (usu. 15-20 degree angulation)
What structures are seen on a PA patella? sharp image of the patella
What structures are seen on a lateral patella? lateral patella and joint space
What structures are seen on a lateral oblique patella? lateral portion of patella free of superimposition
What structures are seen on a medial oblique patella? medial portion of patella free of superimposition
What structures are seen on a PA axial oblique patella? most of the patella free of superimposition
What structures are seen on a Hughston method patella? partial dislocation or fx of patella, femoral condyles
What structures are seen on a Settegast method patella? vertical fx of patella and joint space
Created by: annaluz87