Bone Loss Clinical Trial
Official title:
Bifocal Versus Trifocal External Bone Transport by Ilizarov Ring External Fixator as a Treatment Method for Posttraumatic Bone Defects More Than 5cm in Lower Extremities in Adults
To compare between bifocal and trifocal external bone transport by ilizarov ring external
fixator as a treatment method for posttraumatic bone defects more than 5cm in lower
extremities regarding:
- External fixation index .
- The need of any further surgical procedures as debridement at docking site , the need of
cancellous bone graft or the use of internal fixation.
- Functional outcome, complication rate as well as limb length discrepancy.
Distraction osteogenesis is formation of new bone(regenerate bone) when bone segments undergo
gradual, controlled separation.
There are three treatment approaches by ilizarov ring external fixator according to number of
bone osteotomies. First one is the monofocal approach with closure of defect without any
osteotomies. Second one is the bifocal approach with a single osteotomy to create one
transported bone segment between the osteotomy and the defect. Third one is the trifocal
approach with two osteotomies creating two separate transported bone segments.
Hypothetically, trifocal approach has shorter treatment time than bifocal one as it is a
double level bone transport so closes the defect faster. However, there are other
considerations as complications that may occur and the need of further surgical procedures
and this is what will be discussed in this research.
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