Trendelenburg's test positive in all EXCEPT:

D i.e. Tuberculosis of hip joint - Trendelenberg's test is done to assess the integrity of abductor mechanism. It is positive in the conditions in which any of the three - fulcrum, lever or power is affected eg. dislocation of hipQ, fracture neck femurQ and abductor paralysis d/t polio or superior gluteal nerve palsyQ - Trendelenberg's test may be positive in TB hip only in late stages when the head of femur is destroyed.