Relative stiffness, transverse displacement and dynamization in comparable external fixators.
biomechanical · Level V
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- Record sourced from PubMed, PMID 23915788.
- Also identified by DOI 10.1016/S0268-0033(92)90006-P.
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Abstract
Several unilateral external fixators were laboratory tested under applied axial, bending, and torsional loads. In certain cases the shear movement at the fracture site was substantial, up to 4 mm, and in all cases it was as significant as axial displacement. Also, under average full weight bearing, all the fixator/bone screw frameworks will allow too much axial movement at the fracture. This could inhibit healing and cause peak bone and screw stresses to approach yield.