After months trying to get my bursitis dealt with I still had an underlying problem with a deep muscle called the performis. When this is tight you can't externally rotate your hip (as you would to swing your leg over a low fence or ride a horse etc) or abduct the leg (move it sideways properly). This tightness can produce a set of issues called performis syndrome which can be painful. This issue probably caused my bursitis. The good news is you can do something about it and its very effective.
Last week my right side was done and this week the left. The impact is immediate and very beneficial. You feel like there is lubricant on joints you just assumed never moved and your hips start to return to a more normal position which takes the strain off the hamstrings and lower back. As usual I would recommend you exercise to rebuild strength as any time you release muscles they are weak.
here's a video about the condition - https://www.youtube.com/watch?v=RfugnOzACRE
Pity they couldn't get a human in the voice over.
The approach they used for me was to inject cortisone into the membrane over the periformis so it covers the muscle. It's a guided injection as they don't want to hit the sciatic nerve. On my right side the anesthetic gave me sciatic palsy for a couple of hours which is like losing all feeling in the leg right to the sole of the foot for a few hours. They were horrified but I laughed. Had worse things happen.
The botox people wanted to do it their way but that means you are out of action potentially for months till the neuron regrows. This way is like a magician waved his hands over you.