Yes and no: The newer techniques include both anterior and posterior approaches combined to allow something called segmental fixation while placing screws in individual vertebrae and attaching them to a rod. It's not more flexible than harrington rods, it allows more attachment points and multiple more places to correct the curvature and relieve pressure on the spinal cord and nerves.
Answered 7/21/2012
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There can be: Rod stiffness is related to its size, design and to its composition. The old harrington rods were stainless steel. There are ones that are stiffer and others that are less so.
Answered 8/18/2012
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