<prompt> Medial rotator of thigh at hip joint isObturator externusObturator internusGluteus maximusGluteus minimus  <response>: Gluteus medius, Gluteus minimus, Tensor fascia lata collectively referred to as TRIO muscles- Medial rotators of thigh Obturator internus, Obturator externus, Gluteus maximus -lateral rotators of thigh. 