Buttock splints?

55 yo male who injured himself 4 years ago skiing. Complains of chronic right posterolateral "hip" pain worsening over the last year. Case referred by a chiropractor. Looks like chronic periosteal reaction on radiographs adjacent to ilium. Marked edema in gluteus minimus. I think there is also an avulsion of the indirect head of the rectus femoris. Anyone ever see anything like this? Any thoughts?