title: Surgical treatment of facial fracture by using unsintered hydroxyapatite particles/poly l-lactide composite device (OSTEOTRANS MX(®)): a clinical study on 17 cases.
abstract: BACKGROUND
  In Japan we currently use absorption properties for facial fractures. OSTEOTRANS MX(®) (Takiron co., ltd, Japan) is an absorption device, which is called Super FIXSORB MX(®) in Japan. This absorbable osteosynthetic device constitutes unsintered hydroxyapatite particles/poly l-lactide (u-HA/PLLA) composites. This study focuses on reporting clinical cases of using OSTEOTRANS MX(®).
  
  
  METHODS
  Seventeen patients (16 men and 1 woman) aged 10-80 years (mean: 39.9 years, SD: ±20.7) with 86 fracture sites were treated. In all cases we used 1.0 mm plates and 5 mm or 7 mm screws. The postoperative observation period was 6-60 months (mean: 21.8 months, SD: ±14.5).
  
  
  RESULTS
  The fracture site recovered in all cases. Complications included one bone excess on the forehead and one foreign-body reaction on the frontozygomatic suture, but the fracture sites were recovered and had no problems. In the case with the longest observation time 60 months, the plate was almost fully absorbed. However, in other cases the plate was not fully absorbed because of a shorter observation time.
  
  
  CONCLUSIONS
  OSTEOTRANS MX(®) is a useful device because of its suitable intensity, thinness, radiopaque, and few complications. A longer observation time is required for a plate to be absorbed completely.
authors: Department of Plastic and Reconstructive and Aesthetic Surgery, Japanese Red Cross Maebashi Hospital, Japan. Electronic address: mokkox2@yahoo.co.jp.
authors: Minoru
authors: M
authors: Hayashi
authors: Hideyuki
authors: H
authors: Muramatsu
authors: Masahide
authors: M
authors: Sato
authors: Yosuke
authors: Y
authors: Tomizuka
authors: Mayuko
authors: M
authors: Inoue
authors: Shinya
authors: S
authors: Yoshimoto
mesh_terms: D020341:Absorbable Implants; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001860:Bone Plates; D001863:Bone Screws; D002648:Child; D017886:Durapatite / Q000737:chemistry*; D004867:Equipment Design; D005147:Facial Bones / Q000293:injuries* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D005593:Fracture Fixation, Internal / Q000295:instrumentation; D005624:Frontal Bone / Q000293:injuries; D006801:Humans; D008297:Male; D008875:Middle Aged; D009296:Nasal Cavity / Q000293:injuries; D009917:Orbital Fractures / Q000601:surgery; D009984:Orthopedic Fixation Devices; D011091:Polyesters / Q000737:chemistry*; D012887:Skull Fractures / Q000601:surgery*; D055815:Young Adult; D015051:Zygomatic Fractures / Q000601:surgery
chemical_list: D011091:Polyesters; C499699:hydroxyapatite-polylactide; D017886:Durapatite
keywords: Absorption properties; Facial fracture; Unsintered hydroxyapatite particles/poly l-lactide composites plate