Migration of a lumbar rod to posterior sacral region: An extremely unusual complication of spinal instrumentation [Lomber rodun posterior sakral bölgeye migrasyonu: Spinal enstrümantasyonda son derece nadir bir komplikasyon]

Posterior transpedicular instrumentation is commonly used for the treatment of spondylolisthesis. migration of the lumbar rod to posterior sacral region is extremely unusual. in this report,a 73-year-old-female patient with the migration of lumbar rod to posterior sacral region is presented. she had been placed a posterior trans-pedicular screw-rod instrumentation system for l4-l5 spondylolisthesis four years ago. the anteroposterior and lateral lumbosacral roentgenograms revealed that left-sided rod released completely from the fixation points and migrated down caudally to the sacral area. this case report emphasizes the importance of careful surgical technique and long-term follow up for the cases that have undergone spinal instrumentation surgery.