Why is the Norgaard (ball-catcher view) used if SLE arthropathy is suspected?
In the standard PA view, the fingers are pushed into standard position. In the Norgaard view, the fingers are not positioned and potential subluxations are better seen.
Do the subluxations in SLE arthropathy affect the joint space?
Although there may be apparent narrowing of the joint spaces by subluxations, the joint spaces are actually preserved (which differs from rhematoid arthritis).
Radiographs of the hands, including Norgaard (ball-catcher's) views. There are multiple typical findings in SLE arthropathy, including
- marked contractures and subluxations in a bilateral symmetric pattern
- swan neck deformities, particularly in the right hand
- hooked heads of the second and third metacarpals
- juxta-articular osteopenia
- no erosions
- no soft tissue calcifications