I am 13 months post-op. Xray and CT show no fusion - but I have no pain.
Dr. said the reason my ankle may not have fused is that this is my 5th surgery, and the blood flow to my ankle is compromised. I am also 68 yrs old. I am taking forteo (although surgeon saw no osteoporosis in my ankle bones) and human growth hormone shots daily, along with 10,000 units of D3, B complex and Calcium pills with chelated magnesium.
Doctor said he could operate again, and add some bone plus biologic to force healing.