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Section of
Rheumatology, Department of Internal Medicine, County Hospital
Gävle-Sandviken, S-801 87 Gävle, Sweden
Correspondence to: Dr Weitoft
Accepted for publication 1 December 1999
OBJECTIVE
The aim of
this prospective study was to find if a complete synovial fluid
aspiration before injecting intra-articular corticosteroids influences
the treatment result.
METHODS
The study was
performed in 147 patients with rheumatoid arthritis (RA). One hundred
and ninety one knees with synovitis were randomised to arthrocentesis
(n=95) or no arthrocentesis (n=96) before 20 mg triamcinolone
hexacetonide was injected. The duration of effect was followed up for a
period of six months. All patients were instructed to contact the
rheumatology department if signs and symptoms from the treated knee
recurred. If arthritis could be confirmed by a clinical examination a
relapse was noted.
RESULTS
There was a
significant reduction of relapse in the arthrocentesis group (p=0.001).
CONCLUSION
The study
shows that aspiration of synovial fluid can reduce the risk for
arthritis relapse when treating RA patients with intra-articular
corticosteroids. It is concluded that arthrocentesis shall be included
in the intra-articular corticosteroid injection procedure.
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