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Related Concept Videos

Fractures: Bone Repair01:27

Fractures: Bone Repair

Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the procedure...

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Related Experiment Video

Updated: Jun 6, 2026

Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects
07:35

Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects

Published on: April 11, 2012

Midface distraction osteogenesis: internal vs. external devices.

T R Meling1, H-E Høgevold, B J Due-Tønnessen

  • 1Department of Neurosurgery, Oslo University Hospital, Rikshospitalet, University of Oslo, Norway. torsteinrmeling@mailcity.com

International Journal of Oral and Maxillofacial Surgery
|November 27, 2010
PubMed
Summary
This summary is machine-generated.

External distraction devices offer shorter operation times for midface retrusion treatment compared to internal devices, with similar blood loss and complication rates. External devices provide superior 3D control, making them a preferable option when tolerated.

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Area of Science:

  • Craniofacial Surgery
  • Orthognathic Surgery
  • Biomedical Engineering

Background:

  • Midface retrusion presents significant challenges in craniofacial reconstruction.
  • Internal distraction devices (MID) are established but may have limitations.
  • External distraction devices offer potential advantages in control and efficiency.

Purpose of the Study:

  • To compare the efficacy and outcomes of internal versus external distraction devices for midface retrusion.
  • To evaluate differences in operative time, blood loss, and complication rates.
  • To assess the benefits of 3-dimensional control offered by external devices.

Main Methods:

  • A comparative study of 20 patients with midface retrusion undergoing distraction osteogenesis.
  • Patients were divided into two groups: internal distraction (MID device) and external distraction (Red or Blue device).
  • Outcomes measured included operation time, peroperative blood loss, and complication incidence.

Main Results:

  • External distraction (Blue device) showed a significantly shorter operation time (mean 298 min) compared to internal distraction (MID group, mean 354 min).
  • Peroperative blood loss and complication rates were comparable between the internal and external distraction groups.
  • Both internal and external devices were utilized for various osteotomy types, including Le Fort II, Le Fort III, and monobloc procedures.

Conclusions:

  • While internal distraction devices remain a 'gold standard,' external devices offer a shorter operative time for midface retrusion.
  • External distraction devices provide enhanced 3-dimensional control during the distraction process.
  • External distraction is a preferable treatment option for midface retrusion when patient tolerance allows.