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[Evaluation of the efficacy and tolerance of BPAA gel in 48 patients with extra-articular rheumatic diseases and in 52 patients with osteoarthritis in the painful phase. Open non-comparative study].

An open trial was carried out in 100 outpatients suffering from osteoarthritis (52 subjects) or extra-articular rheumatic disorders (48 subjects). Treatment consisted in topical application 3 times daily of an experimental product, BPAA gel, with 3% of active substance, for 2 weeks. During treatment the use of steroidal and non-steroidal analgesic and antiinflammatory agents or of any other drug apt to interfere with the parameters of evaluation was carefully avoided. Patients cooperated actively in subjective evaluation of pain parameters (Visual Analogue Self-rating Scale) which was used to integrate objective evaluation. Treatment response was very favorable, the drug proving effective in 83% and fairly effective in 5.7% of patients with osteoarthritis (total 88.7%). The corresponding figures for patients with extra-articular rheumatic disorders were 83.4% and 6.2% (total 89.0%). No local or systemic side-effects were observed in any of the 100 patients, nor did laboratory tests reveal any untoward actions of the drug.