According to Hueter-Volkmannn Law, bone growth in
the period of skeletal immaturity
is retarded by mechanical compression on the growth plate and
accelerated by growth plate tension.
law is generally used to explain mechanism of scoliosis. Because of the
physiologic curvature in the normal thoracic spine, compressive force
is delivered on the ventrally located part of the vertebral column,
whereas distractive force is delivered on the dorsally located part. The
process leading to abnormal spinal curvature is thought to be initiated
by the rotation of vertebral bodies in the axial plane, which causes
discrepant axial loading between the ventrally and dorsally located
portions of the involved vertebrae. Over time, the discrepancy
manifests as a change in the directionality of spinal curvature; that
is, the ventrally located part of the vertebral column becomes the
concave side and the dorsally located part becomes the convex side of a
lateral curve. As a result, compression exerted on the vertebral
growth plates at the predetermined concave side of curvature causes
growth to slow, while traction exerted on the growth plates at the
predetermined convex side of curvature causes growth to accelerate.
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