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Upper Extremity > Hand And Wrist Positioning > Flashcards

Hand And Wrist Positioning Flashcards

1
Q

Where is the CR for a digit?

A

The proximal interphalangeal joint

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2
Q

Which phalanges are rotated medially for oblique finger projections?

A

The 2nd digit

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3
Q

Which digits are rotated laterally for an oblique finger projection?

A

3rd- 5th

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4
Q

Which digits have a lateromedial projection on a lateral digit?

A

3rd-5th

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5
Q

Which digits have a mediolateral projection for a lateral digit?

A

2nd

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6
Q

Where do you center for a thumb projection?

A

First metacarpophalangeal joint

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7
Q

What type of fracture does a Modified Roberts method projection rule out?

A

Bennett’s fracture at the base of the 1st metacarpal

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8
Q

What position is the hand in for a PA oblique projection of the thumb?

A

Pronated= thumb in naturally oblique position

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9
Q

Where do you center for PA and PA oblique hand projection?

A

3rd metacarpophalangeal joint

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10
Q

Where do you center for a fan lateral hand projection?

A

The 2nd metacarpophalangeal joint

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11
Q

Which metacarpals should be superimposed at the distal end on a PA oblique hand projection?

A

3rd-5th

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12
Q

How much of the distal radius and ulna should be visualized on hand projections?

A

About an inch

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13
Q

What are two alternatives to a fan lateral hand to see breaks and densities?

A

Lateral in extension and lateral in flexion

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14
Q

What is another name for the AP oblique Bi-lateral hand projection?

A

Noorgard method

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15
Q

Where do you center for the Noorgard method?

A

At the level of the 5th metacarpophalangeal joint

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16
Q

What is the main reason a Noorgard method projection is performed?

A

To check for rheumatoid arthritis

17
Q

What position is the hand in for a PA wrist projection?

A

Pronated with fingers slightly curled under into a loose fist

18
Q

Where is the CR for a wrist projection?

A

Mid carpal area

19
Q

What do you do with the fingers for a PA wrist projection?

A

Slightly curl them under the palm to bring the carpals closer to the IR

20
Q

Which direction should the wrist be rotated for a PA oblique projection?

A

Laterally

21
Q

Which carpals are best demonstrated on a PA oblique wrist projection?,

A

The trapezium and trapezoid free of superimposition, scaphoid, and distal radius and ulna

22
Q

What will a PA oblique image show if it is over rotated laterally?

A

No seperate on between the trapezium and trapezoid

23
Q

What is the thumbs position for a lateral wrist projection?

A

Thumb pointed up

24
Q

What fractures are best demonstrated with a lateral wrist projection?

A

Barton’s fracture- posterior tip of distal radius
Colles fracture- posterior fragment of distal radius
Smiths fracture- anterior fragment of distal radius

25
Q

What two projections best demonstrate possible scaphoid fractures?

A

Ulnar Deviation

Modified Stetcher Method

26
Q

Where do you center for an ulnar deviation?

A

10-15 degrees proximally to scaphoid

27
Q

What is the hand position on a modified Stetcher method?

A

Placed on a 20 degree angle sponge

28
Q

Where do you center for a radial deviation?

A

Mid carpal area

29
Q

Which carpals are best demonstrated with a radial deviation?

A

Hamate, Pisiform, Triquetrum, Lunate

30
Q

What is the method name for the carpal canal tangential wrist projection?

A

Gaynor-Hart Method

31
Q

What is the hand position for a carpal canal/ Gaynor-Hart Method?

A
  • Palmar surface at 90 degrees from wrist

- Hand rotated internally a out 10 degrees

32
Q

Where is the CR directed for a carpal canal/ Gaynor-Hart Method projection of the wrist?

A
  • 25-30 degrees to the long axis of the hand

- 2-3 inches distal to the base of the third metacarpophalangeal joint

Upper Extremity (4 decks)

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