@CassieB, I am about to have my 3rd Aclasta infusion.
I had Osteopenia before starting Arimidex and declined into Osteoporosis within 6 months once I began. After the first Aclasta my bone density improved almost immediately. After the second I no longer have Osteoporosis.
As for side effects .. the first infusion did cause terrible bone pain for about 24 hours so 12 months later armed with paracetamol and ibuprofen I was a little nervous... I didn’t need to be though because I had absolutely no pain/ nothing at all!
So personally I think Aclasta has been great for me.
Oh and you may get it almost fully subsidised because you have had a broken bone(a strange bonus!).
All the best with your decision xJanineG