Authors of section

Authors

Andrew Howard, Theddy Slongo

Executive Editor

Fergal Monsell

General Editor

Chris Colton

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13-M/3.1 I Simple, incomplete, nondisplaced

The pattern of this fracture is characterized by an incomplete metaphyseal fracture that is stable and undisplaced.

To avoid an incorrect classification in children below 5-6 years of age, the position of the capitellum needs to be identified. In this age group, the real size of the capitellum in the lateral view is determined by placing a circle with a diameter equal to that of the humeral shaft concentrically over the visible ossific nucleus. The fracture is classified as a 13-M/3.1 I fracture if Roger's anterior humeral line (red line) intersects the circle.

Note: Be aware of the possibility of nonaccidental injuries in younger children.

definition

Very young child (under 3 years):

  • Roger’s line intersects the capitellum
definition
definition

Young child (3-6 years):

  • Roger’s line intersects the capitellum
definition
definition

Older child (older than 6 years):

  • Roger’s line intersects the capitellum
definition
definition