PA Projection Radial Deviation - Wrist Xray Positioning

Thursday, April 12, 2018

PA Projection Radial Deviation

Image Receptor: 8 x 10 inches, lengthwise or crosswise for two images.

Patient Position:

Let patient seat at the end of the radiographic table.

Part Position:

Position the wrist on the Image receptor for a PA projection.
Cup one hand over the wrist joint to hold it in position. Then move the elbow toward the patient’s body and turn the hand medially until the wrist is in extreme radial deviation.
Shield gonads.

Central ray:

Central ray is perpendicular to the midcarpal area.

Structure shown:

Radial deviation opens the interspaces between the carpals on the medial side of the wrist.

Evaluation Criteria:

The following should be clearly demonstrated:
  • Carpals and their articulations on the medial side of the wrist.
  • No rotation of wrist.
  • Extreme radial deviation, as revealed by the angle formed between longitudinal axes of forearm compared to the longitudinal axes of the metacarpals.
  • Soft tissue and bony trabeculation.

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