This syndrome was first described by Youngman in 1928. It consists in the progressive pressure of the sciatic nerve by the apioid muscle. The pressure is exerted on the nerve outlet by the submandibular foramen and is usually associated with an acute buttock injury. The pain follows the path of the sciatic nerve. Sitting can be painful, and engaging in sports that involve bending or twisting the hips is almost impossible.
Evaluation reveals tenderness of the apical tendon in the gluteal region. The pain released by the medial rotation of the hip under resistance with the limb extended is called the Pace point. Pain can also be produced in an attempt to abduct the limb under resistance.