Diagnosis

12-B1 Spiral wedge fracture

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12-B1

12-B1

Wedge fractures of the humerus with a spiral wedge fragment are classified as 12-B1 fractures.

Fractures in the proximal third of the humerus (12-B1.1) may extend up to the humeral neck.

Fractures in the distal third (12-B1.3) usually heal quickly because of the broad fracture surface, but will have to be reduced anatomically.

In all 12-B1 fractures the radial nerve is at risk.

12-B1

12-B1

X-ray taken from Orozco R et al, (1998) Atlas of Internal Fixation. Used with kind permission.