Posterior Dislocation Fracture of the Shoulder in Epileptic Seizure Disorder

A Case Report

Abstract

We presented a patient who had a posterior-dislocation fracture of the shoulder in an epileptic seizure. A 53year-old male with right side hemiplegia complained of pain and motor disturbance in his left shoulder after a seizure. X-rays and CT scans showed a posterior dislocation fracture of the left shoulder. Greater and lesser tuberosity fragments were displaced. A substantial bone defect of the humeral head accounted for approximately 40%. On the same day, the dislocation was reduced closely, and displacement of the lesser tuberosity fragment remained still. After one week, we performed an internal fixation of burst fragments of the lesser tuberosity into the humeral bone defect with suture anchors. Nine months after the surgery, he had flexion and abduction of 150 degrees, external rotation of 60 degrees, and internal rotation of Ll. The strength of the subscapularis muscle was “good” (MMT). No evidence of avascular necrosis of the humeral head was present. We performed a surgical procedure for the purpose of acquiring the function of internal rotation and anterior stabilization. In the future, he may have any occasions to support his trunk with his left upper extremity. Thus, we must be careful of the occurrence of a humeral head collapse due to weight bearing stress.