7yr old girl, injury to the nerve which passes superior to piriformis & winds around the greater sciatic notch. Most likely muscle affected -
Gluteusmedius
Gluteus Maximus
Obturatorintemus
Piriformis
Ans. is 'a' i.e., Gluteus mediuso Only superior gluteal nerve and vessels pass superior to piriformis(see above explanation),o Superior gluteal nerve supplies gluteus medius and gluteus minimus