The
middle and outer parts of the clavicle are well seen and are common fracture
sites. Check the acromio-clavicular joint to see if there is any subluxation or
dislocation present. This should be confirmed by a weight-bearing view if
suspected.
Look for fractures and dislocations of the humeral head. Both
anterior and posterior dislocations can be missed on this view unless another
radiogram at a different angle is performed. Look for supraspinatus tendon
calcification. Look for deformities of the rotator cuff, evidence of recurrent
dislocation or occasional congenital foramina of the scapula.