osteoporosis
"I had a spinal fusion surgery of T9-S1 just 8 weeks ago. 
I am a 62-year old female. 
Recovery was going well. 2 weeks ago, I was asked to start on Forteo. Within 8 days, I began to have knee pains and it is getting worse by the day, making me feel rather unsteady when I walk. Am also having slight dizziness and a constant mild headache.
Am going to speak to my surgeon re stopping this medication."