Authors of section


Andrew Howard, Theddy Slongo, Peter Schmittenbecher

Executive Editor

James Hunter

General Editor

Fergal Monsell

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21u-M/7 - Ulna, avulsion of apophysis

An avulsion fracture of the olecranon does not involve the articular surface.

An undisplaced avulsion is stable because of the tension band effect of the periosteum and fascia.

Note: the ulnar apophysis may have two ossification centers. This may be misinterpreted as an avulsion fracture.