Anterior transolecranon dislocation of the elbow is rarely observed in children,reported in only a small series.The present case involves an anterior transolecranon dislocation of the left elbow joint in a 7-year-old child,which was surgically treated.Two attempts of closed reduction failed because the radial head had buttonholed via the joint capsule.After its release,open reduction was easily performed;osteosynthesis of the olecranon was not performed.Remarkably,good result was obtained,despite a mild flexion deformity at the last follow-up.This case report aims to highlight this treatment method,which may be considered for such an uncommon injury.