A patient presented with a large, multilocular, refractory traumatic bone cyst. The radiolucency had increased in dimension since her last recall. Over 11 years, therapy had included needle aspiration bipsies followed by simple curettage and closure, the most common therapy for traumatic bone cysts. However, all treatment had proved unsuccessful for this patient. It was decided to treat the patient with a slightly unique method. After curettage of the lesion, the traumatic bone cyst was packed with a mixture of autogenous blood, harvested autogenous bone chips, and hydroxyapatite.