The diagnosis of TB is made by a procedure known as biopsy. It means sending the tissue from the wrist for histopathological examination. Was this done? Along with that A test known as - culture sensitivity is done. If it's a TB you will have to take anti tuberculosis drugs for almost 9-12 months.
Next Steps
Should consult an orthopaedic surgeon who will do the biopsy and also do culture test.
Health Tips
TB responds to treatment nicely provided you complete the treatment