34 - Tuberculosis of hip

*The tuberculosis of hip mainly progresses through three stages .

a- stage of synovitis ( FABER - AL )

b- stage of arthritis ( FADIR - AS )

c- stage of erosion ( FADIR - TS )

The mnemonics indicate the orientation and appearance of the lower limb during those stages of TB

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FABER - AL === stands for flexion , abduction , external rotation and apparent lengthening .

FADIR - AS === stands for flexion , adduction , internal rotation and apparent shortening .

FADIR - TS === stands for flexion , adduction , internal rotation and true shortening.