What is metacarpal phalange tuberculosis transmission route

There are three main ways of transmission of metacarpal and phalangeal tuberculosis: first, due to local trauma, tuberculosis bacteria from the outside enter the tissue through the wound. At the same time, without proper debridement treatment, coupled with the patient's immunity may be relatively low, it is easy to cause tuberculosis infection. Second, the patient himself has tuberculosis. When tuberculosis is active, tuberculosis bacteria reach the metacarpal and phalangeal parts through blood circulation. If the body immunity is low at this time, coupled with local manifestations of poor blood circulation, such as cold injury, etc., resulting in secondary tuberculosis infection, this is a blood-borne disseminated infection path. Third, due to adjacent tissue structure to produce tuberculosis focus, can spread through the tissue gap invasion to the metacarpal phalange, such as the common wrist joint tuberculosis or tendon sheath tuberculosis, thus causing metacarpal phalange tuberculosis attack.