Hi welcome to H.C.M.Forum. it is recurring, and, both sides means it could be over weight problem. if it is not there, could be arthritis
.if use of potato, and other tubers, tomato, cauliflower, and coconut, are restricted in diet, pain threshold will be decreesed. in addition neuro tropic injections and antibiotics and antiinflamatories may help you.there is possibility of T.B of hip joint but 2 sides is not commen. best of luck.