distal radial metaphysis shows buckle-type fracture of the posterior cortex.

torus fracture

By Jeff Thompson


History: Fall on outstetched hand (FOOSH)


Findings:

X-Ray 1: distal radial metaphysis shows buckle-type fracture of the posterior cortex. :: X-Ray 1 ::
distal radial metaphysis shows buckle-type fracture of the posterior cortex.









Discussion:

Three 3 basic "incomplete" fractures that predilict the immature skeleton are the greenstick fracture, the torus fracture and plastic deformity of bone.  Plastic deformity is a diffuse injury to a tubular bone that results in a bent appearance without a visible focal defect of the cortex.  The greenstick fracture typically results from bending or torsional stress and the cortex fails due to tension-type stress, much like a bent green twig will separate on its convex side.  The torus fracture is a local bulge or "buckle" of the cortex that results primarily from compressional force when axial loading along the longitudinal axis of a bone occurs.  These commonly occur with the so-called FOOSH injury (fall on the outstreched hand).  Torus fractures can be subtle and easily overlooked, but are important to detect because the weakened  part is at risk of more catestrophic failure if  unprotected from further stress.





Differential diagnosis: N/A

Diagnosis confirmation: Expert' opinion



Category: Musculoskeletal

Region / Organ: Arm-Bones

Etiology: physical

References:
From Applied Radiology
Subtle Fractures in Kids: How Not to Miss Them
Leonard E. Swischuk, MD

ths article can be found at this link:

http://www.medscape.com/viewarticle/446548




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