Comparison between Autogenous Bone Graft and Allogenous Cancellous Bone Graft in Medial Open

formity correction. However, OWHTO requires bone grafting to fill the bone defect created by osteotomy. Autogenous bone grafts harvested from the iliac crest have been considered as the standard graft material, but prolonged operating time and severe donor site pain are the primary drawbacks1). To overcome these disadvantages, a variety of solutions have been suggested in many studies: allogenous bone grafting; leaving the osteotomy opening unfilled; and using synthetic materials such as tricalcium phos-phate2), bicalcium phosphate granule, acrylic cement3), and hy-droxyapatite4). Still, there are few comparison studies of the allog-enous grafts and autogenous grafts5). In this study, we compared the radiographic and clinical outcomes of medial OWHTO using an allogenous cancellous bone graft with that using an autog-enous bone graft for two years of follow-up period. Our hypoth-esis was that autogenous bone grafts would yield more satisfying radiolographic and clinical results