title: Reconstruction of curved mandibular angle defects using a new internal transport distraction device: an experiment in goats.
abstract: A new internal distraction device, comprising a square-bodied bow, a transport plate, a traction mechanism, and two stabilisers, was developed to allow transportation of bone around an arc. Eight adult goats were studied. A curved mandibulectomy 3cm long was made on the mandibular angle. The distractor was implanted to restore the defect. The bone was distracted at a rate of 1mm per day after a 5-day latent period. Distraction lasted 25 to 32 days. Curvilinear distraction was successful in six of the eight goats. After consolidation periods of four or eight weeks, smooth curved bone masses were restored in the distracted areas. Radiographically, there was considerable bone density in the distraction area and opaque columns streamed in the direction of distraction. Histological examination showed membranous bony regeneration in the restored bone. These results suggest that restoration of curved bone defects using the new internal transport distraction device was feasible in goats.
authors.affiliation: Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an 710032, Shaanxi, PR China.
authors.forename: Li-bin
authors.initials: LB
authors.lastname: Zhou
authors.forename: Hong-tao
authors.initials: HT
authors.lastname: Shang
authors.forename: Man
authors.initials: M
authors.lastname: Hu
authors.forename: Di-chen
authors.initials: DC
authors.lastname: Li
authors.forename: Sekou
authors.initials: S
authors.lastname: Sigare
authors.forename: Ben-lan
authors.initials: BL
authors.lastname: Chen
authors.forename: Yan-pu
authors.initials: YP
authors.lastname: Liu
authors.forename: Jin-long
authors.initials: JL
authors.lastname: Zhao
mesh_terms: D015502:Absorptiometry, Photon; D000497:Alloys; D000818:Animals; D015519:Bone Density / Q000502:physiology; D001860:Bone Plates; D001861:Bone Regeneration / Q000502:physiology; D004867:Equipment Design; D005240:Feasibility Studies; D006041:Goats; D016268:Internal Fixators; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D008336:Mandibular Diseases / Q000601:surgery; D010012:Osteogenesis / Q000502:physiology; D019857:Osteogenesis, Distraction / Q000295:instrumentation* / Q000379:methods; D019651:Plastic Surgery Procedures / Q000379:methods*; D013193:Stainless Steel; D014025:Titanium; D014143:Traction / Q000295:instrumentation
chemical_list: D000497:Alloys; D013193:Stainless Steel; D014025:Titanium