CMF Distractor
Scott P. Bartlett, Richard A. Hopper, Satyesh Parmar, Majeed Rana, Alberto A. Rocha Pereira
CMF distraction is used for lengthening or bone transport to correct congenital deficiencies or acquired (posttraumatic, post-surgical or post-infectious) defects in the mandible (Fig 1) or the cranium (Fig 2). Gradual expansion allows for new bone formation and soft-tissue adaption both in pediatric and adult patients. With existing systems three main issues have raised concerns. The possibility of wrong-way activation of the system, the inadvertent movement by the system and difficult screw engagement and removal.
The new CMF Distractor is visually similar to the old system (Craniofacial Distraction System), except that the distraction bodies are approximately 5 mm longer.
New ratcheting mechanism
The new CMF Distractor has a spring clip (detent tab) to avoid inadvertent reversed movement of the distractor. In addition, the new Patient Activation Instrument contains a one-way ratchet clicking when turned in the wrong direction. With these new features the distractor movement is well controlled and if used correctly will produce reliable results.
The new CMF Distractor is visually similar to the old system (Craniofacial Distraction System), except that the distraction bodies are approximately 5 mm longer.
New ratcheting mechanism
The new CMF Distractor has a spring clip (detent tab) to avoid inadvertent reversed movement of the distractor. In addition, the new Patient Activation Instrument contains a one-way ratchet clicking when turned in the wrong direction. With these new features the distractor movement is well controlled and if used correctly will produce reliable results.
Planning and Performing Maxillo-Mandibular Distraction Osteogenesis
Presentation delivered by A Rocha Pereira in 2019
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