Forearm (AP view)

Forearm AP view is a standard projection to assess radius and ulna.

  • patient is seated alongside the table
  • forearm is supinated, and its dorsal surface is kept in contact with the cassette with extension at the elbow joint
  • both elbow joint and wrist joints are also kept in contact with the cassette
  • anteroposterior projection
  • centering point
    • mid forearm region
  • collimation
    • distal to the wrist joint 
    • proximal to elbow joint
  • orientation  
    • portrait
  • detector size
    • 24 cm x 30 cm
  • exposure
    • 50-60 kVp
    • 3-5 mAs
  • SID
    • 100 cm
  • grid
    • no
  • trochlea and capitulum being seen in profile. 
  • the wrist is in AP position, with minimal superimposition of the distal radius and ulna.
  • the arm should be extended appropriately, as evidenced by the radial head being seen in profile.

Contrary to popular belief the AP forearm should not be considered a view to evaluating any occult injuries of the wrist joint and or elbow due to beam divergence. Beam divergence at the edges of the image should be acknowledged when assessing anatomy 2

Radiographic views

Article information

rID: 31106
Section: Radiography
Synonyms or Alternate Spellings:
  • Forearm antero-posterior view

Support Radiopaedia and see fewer ads

Cases and figures

  • Figure 1: radiographic positioning
    Drag here to reorder.
  • Figure 2: frontal radiograph
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.