Describe the location on the right hip to me as best you can, please. When you say pocket like, can you elaborate on what that means to you? Are you on any medications - names and doses please. Do you have any chronic health problems I should be aware of?
Thank you in advance,XXXXX XXXXX, MD
The location you are describing is consistent with the tensor fascia lata origin on the iliac crest, laterally. It's origin is above the greater trochanter and trachanteric bursa. It's insertion, the iliotibial band, is on the lateral side of the proximal tibia (the closest portion of the tibia). You mentioned that they examined you for ITBFS, but that is more of a problem at the insertion of the iliotibial band and not the origin of the tensor fascia lata. The images at the Wikipedia link will make sense once you see them.
So they did injections? Where? If they were injecting into the trochanteric bursa, the ITB insertion ... they will miss the tensor fascia lata origin completely. Additionally, MRI generally shows increased signal in ITBFS but not necessarily the fasciitis of the tensor fascia lata origin.
ITBFS is more common among athletes and those in training, for instance SOG, SOCOM, Rangers, SFOD-D, etc.. But it doesn't fit with your circumstances. Diagnostically speaking, just infiltrating lidocaine into the tensor fascia lata origin near the iliac crest down to the lowest level the pain reaches will make it or break it for the diagnosis of tensor fascia lata origin fasciitis. If THAT works, then steroid injections, rest, ice, and later anti-inflammatories, physical therapy (ultrasound with electrical stimulation, iontophoresis, stretches, re-conditioning, strength training, and range of motion), then vigorous training including everything you did before and more. It's a "process."
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Kindest Regards,XXXXX XXXXX, MD