Isolated pisiform dislocation after a seizure episode

A 31-year-old woman had a seizure episode three weeks before, leading to a fall on her left hand. Following the accident, she had discomfort on the ulnar side of her left wrist. She decided to seek treatment from a local bone setter; however, her hand discomfort continued and she then came to us for treatment. The radiography and computed tomography scan demonstrated a pisiform dislocation. The pisiform bone was surgically removed. The pisiform dislocation should be considered in the differential diagnosis of the ulnar side wrist discomfort following wrist trauma.