What is it about?
Two factors would be considered to prevent mechanical axis deviation during femoral lengthening using lengthening nails; the nail-medullary canal ratio and location of the osteotomy and its distance from the lesser trochanter.
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Why is it important?
If we would like to decrease the incidence of mechanical axis deviation during intramedullary femoral lengthening, we should be careful during preoperative planning while we are choosing the osteotomy site and choosing the nail diameter relative to the canal diameter at the site of the osteotomy.
Perspectives
According to our findings, I think we can actually get better control on the mechanical axis of the limb and the femur during intramedullary femoral lengthening by simply understanding the forces acting on the osteotomy site causing its deformation due to its location and due to the difference of the canal and nail diameter.
Dr. Mohamed Kenawey
Faculty of Medicine, Sohag University
Read the Original
This page is a summary of: Nail–medullary canal ratio affects mechanical axis deviation during femoral lengthening with an intramedullary distractor, Injury, November 2015, Elsevier,
DOI: 10.1016/j.injury.2015.05.040.
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