Thirty-nine cases of tuberculosis of the knee were treated at the Department of Orthopaedic Surgery, National Medical Center during the 10 yesrs from Jsn. 1977 to Dec. 1986. The results were as followings 1) Total cases of tuberculosis of bone and joint were 411. Among them, knee joint occupied 39 cases (9.5%) 2) Age and sex distribution were not remarkable. 3) Average duration of disease were 27 months. 4) In 56.1% of the pstients, chemotherapy wss given prior to admission. 5) Tbe main associated tuberculosis lesions were pulmonsry tuberculosis (53.9%). 6) Erythrocyte sedimentation rate was increased in 61.6%. 7) The incidence of associated running draining sinus were 25.6%, and majority of the causative microorganisrn was Staphylococcus aureus in complicated mixed infection. 8) Various treatment, such as conservative, synovectomy, curettage, and arthrodesis, had been carried out. 9) Overall recurrence rate was 9.1%.