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Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
Etiology/Pathophysiology:
Incomplete fractures occur in children because of the unique relative
plasticity of their bones. Longitudinal compression of the bone can
cause the spectrum of incomplete fractures in children including
bowing, torus, greenstick and stress factures. A torus fracture
represents a fracture through one cortical surface that may involve
the cortex in a focal area or encircle the bone completely.
Pathology:
Not applicable
Imaging Findings:
Buckling of the cortex involving one or both sides of the bone. May
be very subtle and require multiple radiographic projections to
localize. Look for disruption of the normal trabecular pattern. In
the torus radial fracture the pronator fat plane which is located
posterior to the flexor digitorum profundus tendons and anterior to
the pronator quadratus muscle is displaced in 98% of cases.
DDX:
References:
See References Chapter.
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