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Rheumatology 2003; 42: 102-107
© 2003 British Society for Rheumatology

Superior effect of arthroscopic lavage compared with needle aspiration in the treatment of inflammatory arthritis of the knee

M. van Oosterhout, J. K. Sont1 and J. M. van Laar

Department of Rheumatology, Leiden University Medical Centre and
1 Department of Medical Decision Making, Leiden University Medical Centre, Leiden, The Netherlands

Objectives. To compare the duration of symptom relief after arthroscopic lavage versus needle aspiration in gonarthritis.

Methods. A retrospective chart analysis was performed in 50 patients with non-septic inflammatory arthritis of the knee who underwent arthroscopic lavage because of relapsing or persisting arthritis after needle aspiration. The primary outcome measure was the time until symptomatic recurrence of knee synovitis.

Results. Needle aspiration was associated with a 3.0 times greater risk of recurrence of arthritis compared with arthroscopic lavage within 12 months (P<0.001, 95% confidence interval 2.1–4.4). Patients with longer disease duration and who had used more disease-modifying anti-rheumatic drugs (DMARDs) had a significantly lower risk of recurrence of arthritis compared with patients with shorter disease duration and a lower number of previous DMARDs (P=0.04 and 0.02 respectively). Corticosteroids augmented the effect of both interventions.

Conclusions. Our results indicate that arthroscopic lavage is an effective therapeutic modality in the treatment of inflammatory arthritis of the knee refractory to joint aspiration, especially in patients with longstanding disease.

KEY WORDS: Arthroscopic lavage, Needle aspiration, Joint injection, Knee arthritis.

Correspondence to: M. van Oosterhout, Leiden University Medical Centre, Department of Rheumatology, C4R, PO Box 9600, 2300 RC Leiden, The Netherlands. E-mail: M.van_Oosterhout{at}lumc.nl


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