First Digit (Thumb) First Metacarpophalangeal Joint FOLIO METHOD

PA Projection

First Digit (Thumb) First Metacarpophalangeal Joint

• Projection: ?

Folio Method

First Digit (Thumb) First Metacarpophalangeal Joint

• Method: ?

PA Projection Folio Method

This projection is useful for the diagnosis of ulnar collateral ligament (UCL) rupture in the MCP joint of the thumb, also known a "skier's thumb."

Seat the patient

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Position of patient:

  • ___________ at the end of the radiographic table

Resting them on their medial aspects

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Position of part:

  1. Place the patient's hands on the cassette __________________.

Distal portion of both thumbs

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Position of part:

  2. Tightly wrap a rubber band around the ____________ and place a roll of medical tape between the bodies of the fir t metacarpals.

Bodies of the first metacarpals

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Position of part:

  2. Tightly wrap a rubber band around the distal portion of both thumbs and place a roll of medical tape between the ________________.

Keeping the thumbnails parallel to the cassette

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Position of part:

  3. Ensure the thumbs remain in the PA plane by ________________

Pull their thumbs apart and hold

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Position of part:

  4. Prior to exposure, instruct the patient to _______________.

Gonads

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Position of part:

  5. Shield ________

Midway between both hands

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Central Ray:

  • Perpendicular to a point _________________ at the level of the MCP joint.

Correct technical factors set on the generator

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Central Ray:

  NOTE:

  • To avoid motion, have the ______________ and be ready to make the exposure before instructing the patient to pull their thumbs apart.

Bilaterally

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Structures shown:

  • This projection demonstrates the MCP joints and metacarpal phalangeal angles ___________.

No rotation

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Evaluation criteria:

  The following should be clearly demonstrated:

  • __________ of the thumbs

First metacrapals

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Evaluation criteria:

  The following should be clearly demonstrated:

  • _____________

First MCP joint

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Evaluation criteria:

  The following should be clearly demonstrated:

  • Diagnostic image of the __________

Rubber band and medical tape

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Evaluation criteria:

  The following should be clearly demonstrated:

  • ________ and __________ in correct position

Thumbs centered

First Digit (Thumb) First Metacarpophalangeal Joint

PA PROJECTION

Folio Method

• Evaluation criteria:

  The following should be clearly demonstrated:

  • ____________ to the center of the image