title: Enhancing screw stability in osteosynthesis with hydroxyapatite granules.
abstract: We employed hydroxyapatite (HA) granules to enhance screw fixation in revision surgery of failed osteosynthesis with a compression hip screw system in an 83-year-old woman. After reduction of the fracture, the fracture site with a large bone defect was filled with HA granules, and osteosynthesis was accomplished with a double cannulated lag screw and plate system. We feel that this HA granule augmentation method may also be suitable for osteosynthesis in other osteoporotic fractures.
authors.affiliation: Department of Orthopaedic Surgery, Niigata University School of Medicine, Niigata City, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Hasegawa
authors.forename: S
authors.initials: S
authors.lastname: Yamamura
authors.forename: Y
authors.initials: Y
authors.lastname: Dohmae
mesh_terms: D000058:Accidental Falls; D000368:Aged; D000369:Aged, 80 and over; D001672:Biocompatible Materials; D001863:Bone Screws; D017886:Durapatite; D005260:Female; D005270:Femur Head / Q000293:injuries*; D005594:Fracture Fixation, Intramedullary / Q000295:instrumentation / Q000379:methods*; D017102:Fracture Healing; D006620:Hip Fractures / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular; D012086:Reoperation
chemical_list: D001672:Biocompatible Materials; D017886:Durapatite