[A woman with a painful elbow].

A 24-year-old woman with Ehlers-Danlos syndrome visited the emergency department because of a post-traumatic painful and swollen left elbow with impaired function. A plain radiograph showed chronic luxation of the radial head with impression in the humeral capitellum. The clinical presentation of chronic luxation of the radial head is easily confused with that of an acute dislocation of the radial head, which may wrongly result in subsequent reduction.