Reversible renal side effects of intra-articular osmic acid injection.

In 101 patients treated for knee joint hydrops with intra-articular osmic acid injection, an increased incidence of proteinuria and microscopic haematuria was noted on the first day after injection. This increase subsided rapidly and had disappeared 3 days after the injection. Three patients showed transient glycosuria. No signs of permanent renal damage appeared in any patient.