There is a relationship between gonorrhea and arthritis. Gonorrhea is a sexually transmitted sexually transmitted disease, and the gonorrhea bacterium can be transmitted to the joints through the bloodstream, so gonorrhea can also cause arthritis. In these patients, the main symptoms of the knee joint are swelling and pain, but the culture of the joint fluid will reveal the presence of gonorrhea. Therefore, gonorrhea arthritis can be diagnosed through culture of joint fluid, so there is a close relationship between gonorrhea and arthritis.