Acromioclavicular joint (AP view)
The acromioclavicular AP view is a single projection assessing the patency of the acromioclavicular joint.
See also, acromioclavicular joint injuries.
On this page:
Patient position
- patient is erect
- midcoronal plane of the patient is parallel to the image receptor, in other words, the patient's back is against the image receptor
- 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
Technical factors
- anteroposterior projection
-
centring 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)
Image technical evaluation
- the acromioclavicular joint is central to the image with no overlap
Practical points
It is not uncommon for additional projections to be requested, most commonly a bilateral view. Contrary to popular belief that the divergence beam will obscure the critical anatomy, one must take into account that the 'amount' of divergence for each joint will be equal.
Related Radiopaedia articles
Radiographic views
- pediatric radiography
- radiographic positioning and terminology
- systematic radiographic technical evaluation
- chest radiography
- pediatric chest radiography
- abdominal radiography
- pediatric abdominal radiography
-
upper limb radiography
-
shoulder girdle radiography
- scapula series
-
shoulder series
- AP view
- internal rotation view
- external rotation view
- superoinferior axial view
- inferosuperior axial view
- modified trauma axial
- supine lateral
- modified supine lateral
- Y lateral view
- AP glenoid view
- apical oblique view (Garth view)
- humerus (neck) AP view
- humerus axial (bicipital groove) view (Fisk view)
- outlet view (Neer view)
- Stryker notch view
- acromioclavicular joint series
- clavicle series
- sternoclavicular joint series
- arm and forearm radiography
- wrist and hand radiography
-
shoulder girdle radiography
-
lower limb radiography
- pelvic girdle radiography
- thigh and leg radiography
- ankle and foot radiography
- skull radiography
-
paranasal sinus and facial bone radiography
- facial bones
- Caldwell view (angled skull PA view)
- nasal bones
- zygomatic arches
- orbits
- paranasal sinuses
- temporal bones
-
dental radiography
- orthopantomography (OPG)
- mandible
- temporomandibular joints
- spine radiography