Acromioclavicular joint (AP weight-bearing view)

The acromioclavicular AP weight-bearing view is an additional interjection often performed to rule out displacement when it is suspected but not confirmed on the AP view

See also, acromioclavicular joint injuries.

  • the patient is erect holding a weight in the affected sides hand
  • the midcoronal plane of the patient is parallel to the image receptor, in other words, the patient's back is against the image receptor
  • the acromioclavicular joint of the affected side is at the center of the image receptor
  • affected arm is in a neutral position by the patient side
  • anteroposterior projection
  • centering point
    • at the acromioclavicular joint
  • collimation
    • superior to the skin margins
    • inferior to the humeral head
    • lateral to include the skin margin
    • medial to lateral third of the clavicle
  • orientation  
    • landscape
  • detector size
    • 18 cm x 24 cm
  • exposure
    • 60-70 kVp
    • 10-15 mAs
  • SID
    • 100 cm
  • grid
    • yes (this can vary departmentally)
  • the acromioclavicular joint is central to the image with no overlap
  • the image is appropriately annotated weight-bearing

This projection can be very painful for a patient with an AC joint injury; it is highly recommended that everything is set up and positioned, so the last thing you do is hand the weights over.

Radiographic views
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Article information

rID: 48986
Section: Radiography
Synonyms or Alternate Spellings:

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Cases and figures

  • Figure 1: weight bearing view
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