1. In two cases of acute gonococcal synovitis of the knee, treated by a short period of immobilization and daily aspiration and air inflation, the patients recovered, with good functional results, in an average period of four weeks.
2. Roentgenograms taken of the air-filled joints revealed characteristic adhesions in the suprapatellar pouch, which account for the slight functional impairment encountered in these cases.
3. The sequelae of the effusion, as revealed by these roentgenograms, suggest that early motion and frequent aspiration and air inflation are valuable adjuncts in the intelligent treatment of this disease.