A 10 years old male with pain in left hip & limping on examination restricted abduction & internal rotation, probable diagnosis is -
Septic arthritis of hip
Tuberculous arthritis of hip
Congenital dislocation of hip
Perthes disease
Amongst the given options restriction of abduction and internal rotation is seen only in Perthes disease.


About other options

In TB hip :-

i) Stage of synovitis :- Restriction of adduction, internal rotation & extension.
ii) Stage of arthritis :- Restriction of abduction, external rotation & extension.

Septic arthritis :- Restriction of adduction, internal rotation, extension in early stages.
Congenital dislocation of hip :- Restriction of abduction, external rotation.