Thank you for your suggestions.

I too have high arches. I didn't know that until the source of the toe pain was diagnosed several years ago. The podiatrist said I have "flexible high arches", and made casts of my feet for custom orthotics. I wear the orthotics daily. I LOVE them! Since I started wearing them, I have significantly less back pain, and the hip achiness (a general achiness of the muscles, NOT the grinding groin pain I have now) virtually disappeared. Like you, I now sing the praises of shoe inserts to anyone who complains of back or leg pain. However, they do not relieve the type of pain I'm having now (though the pain might be worse without them, I don't know).

I will seek medical attention soon, at least for baseline x-rays and to rule out other conditions. I do a lot of my own research and ask questions to stay informed and educated on the latest information.