![]() The mnemonic CRITOE can be used to remember the ossification centers. lateral condylar or epicondylar fracture. In young children, it is important to assess the elbow ossification centers to ensure that no other fractures have occurred, e.g. Where this is lost, radial head dislocation has occurred. If intact, the ulna is likely to be bowed 1. This is most easily seen in lateral projection, where there is malalignment of the radiocapitellar line - a line drawn down the radial neck should always intersect the capitellum. ![]() In almost all cases of isolated traumatic radial head dislocation, the radial head is dislocated anteriorly. cerebral palsy and brachial plexus injuries 1. Monteggia fracture-dislocation is uncommon in children, but it is by no means rare 2.ĭislocation of the radial head is also seen in individuals with neuromuscular disorders and contractures, e.g. Therefore, rather than radial head dislocation being associated with a transverse ulna fracture, the ulna may instead develop a bowing fracture the ulnar bow sign is useful to investigate this 4. Plastic deformation of bones is common in pediatric patients. Thus, it is important to ensure that radial head dislocation is truly isolated and not associated with an ulna fracture (the Monteggia fracture-dislocation). ![]() Akin to the mandible and pelvis, it is difficult to disrupt one side of a ring without also disrupting the other. The radius and ulna are bound to each other at both ends at the aptly-named proximal and distal radioulnar joints.
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