If you mean the area over the Greater Trochanter of the Femur, there is no muscle there. The lateral offset from the head of the Femur to the Greater Trochanter is entirely determined by bone structure. The main muscles to work with are the Vastus Externus on the outside of the leg between the Greater Trochanter and the knee, and the Gluteus Maximus and Gluteus Medius between the Greater Trochanter and the Crest of ilium at the top of the Pelvis.
