I had a spinal fusion with these new fangled cages that are supposed to dissolve about the time the bone graft heals. Just about how long does it really take for the body to absorb this device?

Bioresorbable cages are being used more often now in spinal fusion and other orthopedic surgeries. Studies are ongoing to see how long it takes to break down or be absorbed by the body. Researchers are looking to see if any one thing increases or decreases the rate of degradation.

In some studies, X-rays show that solid fusion is often complete at the end of six months. By the end of the first year, fusion and bone remodeling is observed in all cases. Other studies report fusion is complete by the end of three months.

It takes much longer for the implant to slowly become incorporated into the bone structure. Some degradation is seen by the end of 12 months. Much more has occurred by the end of 24 monnths (two years). Scientists are looking for ways to speed this up so future patients may not have to wait as long for full recovery to take place.