Two Cases of Acromioclavicular Injuries in Children (pseudodislocation)

Abstract

Acromioclavicular injuries in children are very rare. Dameron and Rockwood reported that the clavicle was displaced superiorly out of the periosteal tube and coracoclavicular ligaments remain intact to the periosteal tube. They classified child acromioclavicular injuries into six types, and suggested that reduction and internal fixation should be indicated for types IV, V and VI.
We experienced two cases of pediatric acromioclavicular injuries. The first case involved an 11-year-old boy presenting type IV acromioclavicular injury. Conservative treatment was performed. The second case involved a 12-year-old boy also presenting type IV acromioclavicular injury. In this case, closed reduction and osteosynthesis were carried out. Both cases were observed for over a year. During this period, the patients did not suffer from subjective symptoms although there was new bone formation under the original clavicle.