Diagnosis is made by xray and lab tests on fluid aspirated from the affected joint area. Bone tb is not contagious and is treated at home with medication. The duration of treatment will depend on the location and severity of the infection and can be anywhere from 6 months to a year.iagnosis is made by xray and lab tests on fluid aspirated from the affected joint area. Bone tb is not contagious and is treated at home with medication. The duration of treatment will depend on the location and severity of the infection and can be anywhere from 6 months to a year.