Bone Healing Accelerant (BHA) Versus Autologous Bone Grafting (ABG) for Hindfoot or Ankle Arthrodesis

Inclusion Criteria: * Patient has pain with weight-bearing in the joint(s) below that, in the opinion of the Investigator, warrants arthrodesis: 1. Tibiotalar (ankle) 2. Talocalcaneal (subtalar) 3. Talonavicular 4. Calcaneocuboid 5. Double hindfoot (e.g., talonavicular and talocalcaneal joints) 6. Triple hindfoot (subtalar, talonavicular and calcaneocuboid joints * Joint space(s) can, in the opinion of the Investigator, be adequately filled with no more than 9 cc of graft material (BHA or ABG) * Each fused joint can be adequately compressed and rigidly stabilized with plates, screws, staples or a combination thereof. External fixation, percutaneous Kirschner wires or intramedullary rods may not be used. * Patient is willing and able to comply with all study requirements including all postoperative clinical and radiographic evaluations. * If patient is a woman of childbearing bearing potential (not post-menopausal for 12 months or surgically sterile), patient has a urine pregnancy test with a negative result at screening and on the day of surgery, prior to the procedure. These trial participants must commit to adequate birth control through the 52-week follow-up Exclusion Criteria: * Skeletally immature patients (i.e., radiographic evidence of open physes), regardless of age * Bone deficit, defect or void requiring a structural graft * Condition requiring intramedullary nailing or external fixation for the arthrodesis * Condition requiring osteotomy or fusion of any midfoot joints. * Prior arthroplasty, arthrodesis, major surgical repair or reconstruction of the index ankle or hindfoot joints.