Hand/Thumb/Fingers RAD 1 Positioning Flashcards

1
Q

What SID is used for hand positioning?

A

40”

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2
Q

What IR is used for the hand?

A

10 x 12

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3
Q

Where is the CR located for PA Hand and PA oblique?

A

Perpendicular to 3rd MCP joint

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4
Q

What structures are seen in PA Hand projection?

A
  • PA projection of entire hand
  • 1’ distal forearm
  • Open IP and MCP joints
  • Palm flat against IR
  • No rotation
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5
Q

What structures are seen in 45 degree PA oblique hand?

A
  • Slight overlap of the metacarpal bases and heads
  • Seperation of the 2nd and 3rd metacarpals
  • Open IP and MCP joints
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6
Q

Where is the 45 degree PA Hand oblique rotated?

A

Lateral

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7
Q

What structures are seen in a lateromedial hand projection?

A
  • Superimposed metacarpals
  • Proximal portions of phalanges superimposed
  • Superimposition of distal radius and ulna
  • all digits fully extended/fanned
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8
Q

Where is the CR for a lateromedial hand projection?

A

Perpendicular to 2nd MCP joint

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9
Q

What sign does the lateromedial hand make?

A

ok sign

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10
Q

What is another name for AP oblique hand projection?

A

Ball-catchers aka Norgaard method

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11
Q

Where is the CR located for Ball-catchers?

A

Perpendicular in the middle of both hands at the level of MCP

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12
Q

What are structures seen in Ball-Catchers position?

A
  • Both hands shown from the carpal area to the tips of the digits
  • Metacarpal hands and proximal phalangeal bases free of superimposition
  • Aids in the diagnosis of rheumatoid arthritis
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13
Q

What does MCP stand for?

A

Metacarpal phalangeal joint

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14
Q

Where is the CR located for PA projection of fingers?

A

Perpendicular to PIP joint of affected digit

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15
Q

What structures are seen in PA projection of finger?

A
  • Open IP & MCP joint spaces without bone overlap
  • Entire digit from fingertip to distal portion of metacarpal
  • Soft tissue and bony trabeculation
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16
Q

Where is the CR located for 45 degree medial oblique position of 2nd finger?

A

Perpendicular to PIP joint

17
Q

What structures are seen in a 45 degree medial oblique position of 2nd finger?

A
  • Entire digit projected at a 45 degree angle, including the distal portion of the adjoining metacarpal
  • Medial oblique done to decrease OID
  • Soft tissue and bony trabeculation
  • No superimposition of adjacent digits over the proximal phalanx or MCP joint
18
Q

Where is the CR located for mediolateral projection of 2nd digit?

A

Perpendicular to PIP joint

19
Q

What structures are seen for mediolateral projection of 2nd digit

A
  • No rotation of phalanges
  • Open IP spaces
  • No obstruction of the proximal phalanx or MCP joint by adjacent digits
  • Mediolateral for the 2nd digit done to reduce OID
20
Q

Where is the CR located for 45 degree lateral oblique position of 3rd-5th digits?

A

Perpendicular to PIP joint

21
Q

What structures are seen for a 45 degree lateral oblique position of 3rd-5th digits?

A
  • Entire digit projected at a 45 degree angle, including the distal portion of the adjoining metacarpal
  • Soft tissue and bony trabeculation
  • No superimposition of the adjacent digits over the proximal phalanx or MCP joint
22
Q

What is the CR located for a lateromedial projection for 3rd-5th digits?

A

Perpendicular to PIP joint

23
Q

What structures are seen for a lateromedial projection for 3rd-5th digits?

A
  • No rotation of phalanges
  • Open IP spaces
  • No obstruction of the proximal phalanx or MCP joint by adjacent digits
  • Soft tissue and boney trabeculation
24
Q

Where is the CR located for PA oblique projection of thumb?

A

Perpendicular to MCP joint

25
Q

What structures are seen in a PA oblique projection of thumb?

A
  • Visualization from the distal tip of the thumb to the trapezium
  • Open IP and MCP joint spaces
  • soft tissue and boney trabeculation
26
Q

Where is the CR located for the AP projection of thumb?

A

Perpendicular to MCP joint

27
Q

What are the structures seen for a AP projection of thumb?

A
  • Visualization from the distal tip of the thumb to the trapezium
  • Open IP and MCP joint spaces
  • soft tissue and boney trabeculation
28
Q

Where is the CR located for Mediolateral projection of thumb?

A

Perpendicular to MCP joint

29
Q

What are the structures seen for a Mediolateral projection of thumb?

A
  • Visualization from the distal tip of the thumb to the trapezium
  • Open IP and MCP joint spaces
  • Visualization of anterior or posterior displacement or foreign body
30
Q

What is the tip of the finger called?

A

Tuft