Update: I saw the physiatrist (MD in rehab). She did MRI and xrays of knee and hip. Says hip replacement looks good. Knee is BAD.....tears in meniscus and ACL, lots of arthritis. I was hoping someone would do arthroscopy, but surgeons consulted say no....TKR will be necessary. I haven't scheduled it yet, as I am looking into anesthesia and possible cognitive decline after major surgery. The other various muscle pains seemed to be due to a statin allergy.....so I am off statins and wondering what will happen to my cholesterol!