eMedicine Specialties > Radiology > Musculoskeletal
Rheumatoid Arthritis, Hands: Follow-up
Updated: May 10, 2007
Intervention
The primary role of imaging in RA of the hands and wrists is to exclude septic arthritis. Percutaneous ultrasonography-guided aspiration may be useful for localizing and obtaining samples of any collection that can be found. Image 17 shows ultrasonography-guided biopsy of the second MCP joint in the right hand.
Medicolegal Pitfalls
- Of concern is the possibility of misdiagnosing another erosive arthropathy as RA or vice versa (see Differentials). Because the diagnosis of RA is a predominantly clinical one, the primary role of imaging is in follow-up observation.
- RA may occur as part of a mixed connective tissue disease in which clinical and radiologic appearances are not typical of one particular disease.
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References
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Further Reading
Keywords
RA, human leukocyte antigen, DR4, DRB1, joint deformity, joint fusion, metacarpophalangeal joint, MCP joint, proximal interphalangeal joint, PIP joint, thumb interphalangeal joint, IP joint, distal interphalangeal joint, DIP joint, swan-neck deformity, boutonnière deformity, button-hole deformity, inflammatory joint disease, rheumatoid nodules
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