for a week now i am having periodic 10-12 a day extremely sharp pains that last 5-10 seconds at the top of the leg towards the groin area sometimes toward the mid thigh. it happens ion all positions, sitting, standing, lying down. it is not related to strenuous activity. i had a total hip replacement on same side 3 years ago with little trouble. i have already had a cat scan which ruled out hernia, kidney stones, nothing in the stomach or abdomen. the doctor called it an enigma. ia m 63, fit, 163 lbs