Unusual types of distal clavicular fractures: Two case reports

Distal clavicular fractures were classified by Neer in 1963. A type II fracture leads to a high rate of delayed union, or nonunion, with undesirable symptoms. Type II distal clavicular fractures usually exhibit superior displacement of the clavicle. We report two cases of distal clavicular fracture with inferior displacement and posterior displacement. Open reduction and internal fixation was performed in both patients, resulting in excellent functional outcome. As far as we know, this is the first report for these fracture patterns.