Tuberculous arthritis of the knee presenting as a meniscal tear.

Nonspinal skeletal tuberculosis is a rare, indolent disease that is often difficult to diagnose. The incidence in the United States has recently increased. Pain and swelling are common symptoms. Radiographs may reveal normal findings, or in more advanced cases, demonstrate osteopenia, marginal erosions, and eventually, joint space narrowing and destruction. Treatment depends on the extent of the disease. Prolonged therapy with antitubercular agents is the mainstay of treatment. Synovectomy, osseous debridement, and arthrodesis also have a role in the treatment of this infection.