Methods In this retrospective study, 14 patients with a mean age of 44 years (26-67 years) suffering from non-union (n=11) and/or malunion (n=4) of the clavicle were enrolled. All patients were surgically treated using an anatomical precontoured locking compression plate (LCP) and autologous iliac crest bone graft. Functional outcome was assessed using the age- and sex-specific relative Constant Score.