distractor device
A mechanical apparatus used in distraction osteogenesis to gradually separate bone segments and stimulate new bone formation.
Full Definition
A distractor device is a specialized mechanical apparatus designed to gradually separate two bone segments during distraction osteogenesis procedures. These devices consist of two main components connected by a screw mechanism that allows for controlled, incremental lengthening at a predetermined rate, typically 1mm per day. Distractors can be internal (buried beneath the skin) or external (with transcutaneous pins), and they come in various configurations including unidirectional, bidirectional, and multivector devices. In craniofacial surgery, distractors are commonly used for mandibular lengthening, maxillary advancement, and cranial vault expansion. The device must remain in place during the distraction phase and subsequent consolidation period until new bone formation is complete.
Usage
Usage note: Specify whether internal or external, and the specific activation protocol when documenting procedures.
In Context
- "The internal distractor device was activated at 0.5mm twice daily for mandibular lengthening." — Post-operative instruction
- "Removal of the distractor device was scheduled after eight weeks of consolidation." — Treatment timeline