[Bilateral Dorsal Fracture-Dislocation of the Proximal Humerus].

Fractures of the proximal humerus constitute approximately 5% of all fractures. Shoulder joint injuries without any external mechanical impact during seizures with the occurrence of spasms occur only sporadically. The occurrence rate is reported in approximately 0.4% of patients. Very rarely they occur in the form of epileptic seizure-induced dorsal fracturedislocation impacting both sides. The case report describes a case of a 48-year-old woman with no treatment for epileptic seizures in her medical history. During the first seizure she sustained a bilateral dorsal fracture-dislocation caused by a muscle spasm, without any other mechanical impact. The fractures were classified as a 3-fragment fracture on the right side and a 4-fragment fracture on the left side. After the patient's admission to the inpatient emergency department, reduction under anaesthesia was attempted. Subsequently, after preparation, open reduction and osteosynthesis using an angularly stable plate were performed as a two-stage surgery. No complications were observed postoperatively Currently, at 3 years after surgeries, the female patient has full mobility of her shoulder joints with no subjective difficulties. Key words: epilepsy, seizure, dorsal fracture-dislocation of the proximal humerus.