I have had two Prolia injections and am scheduled for another one in October. My main side affects are aching muscles, primarily in my hips, mainly at night while sleeping and walking during the day . A 2013 Dexa Scan revealed that I was at a -4. My doctor said that she had never seen a number that low and that I was at risk for compression fractures. It showed that I had osteoporosis in the neck and spine. I have never had any broken bones or fractures and am otherwise very healthy. I am 61 years old and exercise at Curves and do Yoga on a regular basis. Have studies been concluded on Prolia and show it to be more effective than Fosomax or Boniva? I would like some more research before I have my next injection.