Look out for Prof Tim Watson's new book on electrophysical agents: evidence based practice (Elsevier). In this book he has tried to provide the definitive guide, based on current evidence, for all EPA contraindications including RPW
In answer to your question there are currently no clinical trials to suggest that RPW will have an adverse effect on hip and knee replacements. That said as some Orthopaedics surgeons use shockwave to help remove cemented in prostheses, that require revision, then caution should be made. If the prosthesis has been in a while then it is unlikely RPW will have an adverse effect. A new prosthesis that has been cemented in place may be more at risk
So unfortunately there is no definitive answer to your question. It must be a clinical decision. My mantra being if in doubt don't and the you cannot be wrong
To pick up on one point you made: If you consider hip pathology as being an insertional tendinopathy then RPW should help. If, however, you are dealing with a true trochanteric bursitis then ROW is likely to make it worse. It is after all a pro inflammatory modality.
Atrial fibrillation and age are not contraindicated.
I trust that helps