Graft not remodeling on follow-up CT after ankle fusion?
For foot & ankle fusion surgeons in IU Health, IN: what a slow-remodeling graft really means and what to look for next.
Your ankle fusion patient is six months out and the follow-up CT shows graft material sitting there, not turning into host bone. That can make a surgeon in IU Health worry about a nonunion before the next step. You want to know if the graft is just slow or if it is failing.
When a graft looks unchanged on CT at six months, it may not be remodeling the way host bone should. Some synthetics resorb too slowly or have pores that do not connect. Host bone needs a clear path to grow into the graft. If blood vessels cannot get in, new bone cannot take over. Dense material on CT can look static even when the fusion is trying to heal. That is a common frustration in ankle and hindfoot cases, especially in active patients who are still non-weightbearing.
In IU Health, a nonunion workup adds more imaging, more visits, and sometimes a revision fusion. A revision costs far more than choosing a graft with known remodeling data up front. The scope depends on the fusion site. Tibiotalar, subtalar, and midfoot fusions each load bone differently. If you wait for another CT at nine months and still see no change, the path gets longer. Checking the graft's resorption profile early saves you and your patient a longer recovery.
This week, pull the resorption profile on the graft you used. If the scaffold is not highly porous and interconnected, it may not be replaced by host bone on schedule. For predictable remodeling in foot and ankle fusion, consider a silicate-substituted calcium phosphate with published fusion data, like ACTIFUSE or ALTAPORE. Elite Surgical can put the CT-based evidence and published fusion series in front of you before your next tibiotalar, subtalar, or midfoot case.
Once you match the graft to the fusion site, the follow-up CT should show bone bridging instead of a static graft. Your patient can progress weightbearing with more confidence. You spend less time wondering about a nonunion and more time on the next case. That is the kind of fusion result you want to defend in a chart.
Other things people in IU Health ask
weight bearing after ankle fusion with synthetic bone graft
Weight bearing depends on fixation stability, not just the graft. With ACTIFUSE, the scaffold starts remodeling within weeks, but full load is typically allowed after 6-8 weeks if the construct is solid. Check your specific fixation and follow published protocols for tibiotalar fusion with this graft.
ACTIFUSE FLOW vs ACTIFUSE SHAPE ankle fusion
FLOW is ideal for narrow, irregular spaces because the syringe lets you inject it precisely. SHAPE is better when you need to pack a larger void and want the graft to stay in place without migrating. For a typical ankle fusion with moderate bone loss, either can work. Choose FLOW if you need to fill a tight gap; choose SHAPE if you need to build up a defect and contour it.
bone graft substitute for diabetic ankle fusion
Use a scaffold that remodels into real bone and can handle poor host biology. ACTIFUSE provides an 80% porous structure that the body replaces with living bone, without harvesting from the hip or heel. Published tibiotalar fusion series using this graft show reliable outcomes in compromised patients.
cost of bone graft substitute for ankle fusion
The price depends on the volume of graft needed and the specific product. For a standard ankle fusion, a synthetic graft like ACTIFUSE typically costs less than using a bone graft harvested from the patient when you factor in OR time and donor site complications. Get a quote from your supplier for the exact product and volume.
normal shoes after ankle fusion synthetic bone graft
Most patients can transition to a supportive shoe around 10 to 12 weeks after surgery, once X-rays show the fusion is solid. Synthetic grafts like ACTIFUSE remodel into real bone, so the timeline is similar to autograft. Always confirm healing on imaging before clearing the patient.
Ready to talk?
Elite Surgical handles foot & ankle fusion in IU Health and the area around it.