FINGERS, HAND, WRIST POSITIONING

OID, detail flex at 90 degrees medial

flexing the fingers for PA projection of the wrist decreases -------, and increases ----- for lateral projection of wrist how should elbow be positioned for lateral projection of wrist, which surface of wrist should be in contact with IR

allows better OID support finger to enable holding 45 degree angle, keep steady, parallel

for PA oblique projection of the second digit, what is advantage of rotating the second digit medially compared with the advantage of rotating the digit laterally for PA oblique projection of third digit, what is advantage of placing patients fingers on 45 degree foam wedge

trapezium, 1st metacarpal, distal phalanx, proximal phalanx 45, 90 metacarpals

4 bones seen in AP thumb how many degrees should hand be rotated for PA oblique, PA lateral bones primary interest for PA oblique projection hand

scaphoid, lunate 3rd, 2nd

two bones clearly demonstrated on PA oblique projection wrist digit create greatest OID in lateral projection digit; least OID?

scaphoid bone 20 degrees perpendicular 20 degree angle toward the elbow

in stretcher method and PA axial the primary interest is the how far from horizontal should IR be inclined toward the elbow in PA axial projection (stretcher method) when using wedge to elevate IR for Pa axial stretcher method, how should central ray be directed toward wrist if no wedge is used, how should CR be directed toward wrist

phalanges lateral medial

largest group bones in hand best demonstrated in fan lateral of hand which projection wrist requires superimposition of radial/ulnar styloid process surface hand in contact with lateral project wrist

medial (ulnar) reduce distortion and increase accuracy of digits 45 degrees

on which hand surface should the hand be rested on when performing a lateral projection image of 4th or 5th digit? for lateral projections of third or fourth digits why should the affected digit be positioned so that its long axis is parallel with IR how many degrees from PA position should a finger be rotated in PA oblique

ulna and radius 45 degrees ulna

what other bones in addition to metacarpals and carpals should be superimposed for a lateral projection how much should the wrist be rotated for PA oblique projection PA oblique projection when scaphoid is primary interest, the scaphoid can sometimes be better demonstrated if patient deviates hand and wrist toward the

PA thumb is not against image receptor so it causes magnification due to bigger OID trapezium

what projection of thumb may be substituted if patient unable to maintain AP projection what is disadvantage of using the PA projection over AP projection for the thumb all thumb images should include the ---- within the collimated field

perpendicular MCP joint AP PIP 3rd digit

where is center ray for AP projection thumb projection requires rotate hand internally extreme centering CR PA projection third digit

scaphoid 10-15 degrees medially or laterally

which bone primary interest when using ulnar deviation to delineate a fracture line better with PA projection of wrist with ulnar deviation, how many degrees and in which direction should CR be directed

lateral in extension ulnar deviation

which hand position best for foreign bodies which wrist positioning maneuver opens carpal interspaces of lateral side wrist

PA with ulnar deviation pa with ulnar deviation

which projection wrist corrects foreshortening scaphoid carpal bone projection best demonstrates scaphoid carpal bone and its articulations

IP, MCP lateral, in extension

which two groups of joints of the hand and digits should be demonstrated open on the image of the PA projection of the hand which projection of the hand should demonstrate superimposed phalanges