Brain and nerve = Shinkei kenkyū no shinpo
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Isolated traumatic oculomotor nerve palsy caused by minor head trauma is extremely rare. We report a case of this condition. A 65-year-old woman was transferred to our hospital after minor head injury. ⋯ After 8 months of the accident, the ptosis and limited eye movement were resolved. However, the right dilation of the right pupil persisted. Our case suggests that even minor head trauma can cause isolated oculomotor palsy, and that the posterior petroclinoid ligament is a candidate structure for causing oculomotor nerve palsy without intracranial hemorrhage and skull fracture.