Ditto on the advice above,,I had a THR and rsd went into overdrive,,,its a deep joint surgery,,,continous block if its a have to case,,but other than that I concur with the above,,I also have both shoulders that are bad,,one that has a torn rotorcup,,,I dont lift my arm over head or do front lateral raises,,,good luck,,,,pm if you want to,,I was informed of a insurance option 2day