Very rarely, clips used for the ligation of intracranial aneurysms become detached and subsequently migrate into the spinal canal, causing lumbar pain or radiculopathy by compressing nerve roots or inducing inflammatory processes in their newly established location. However, it is easy to overlook the migration of the clip, because there may be either no noticeable symptoms, or a herniated disk may be mistakenly diagnosed as being the source of the present symptoms. Herein, the authors report a case in which an aneurysmal clip migrated into the spinal cord.