Hi, my hips pop and grind during certain movements and my inner thigh is in pain. When I lay down and bend one knee outward and up and then in towards my midline I feel a very painfull pop and grind. If I place my hand at the site of the popping I can actually feel it with my hand. What could this be and how is it treated? I had a hard slip and fall about two months ago. Also if i put both legs straight up in the air and then lower them together, I feel and hear more grinding and poping coming from my lower spine and each side of my spine. There are about three distinct pops in my back, two on the side of my spine and one right in the middle. What could this be?