Usual site of TB bursitis -
Prepatellar
Subacromial
Subdeltoid
Trochanteric
TB is is still a common infection in developing countries. After lung and lymph nodes bone and joint is the next common site of TB in the body. The commonest bursa involved in TB is trochanteric bursa resulting in trochanteric bursitis. REF:Essential ohopaedics- Maheshwari- 5th edn - pg no 182.
Bony dysplasia and soft tissue affection