title: Anterior scoliosis rod migration to the lower extremity.
abstract: BACKGROUND
  Scoliosis rod migration has been reported rarely in the literature. We present a case study on three patients with distant migration of anterior scoliosis rod implants.
  
  
  OBJECTIVE
  To report an unusual complication of rod migration of anterior retroperitoneally implanted scoliosis rods in three patients.
  
  
  METHODS
  A retrospective case report.
  
  
  METHODS
  Radiographic analysis.
  
  
  RESULTS
  Asymptomatic rod migration occurred from the anterior spine to the lower extremity in two cases and to the retroperitoneal space in the third case. The rod fragment appeared in the lower extremity in two cases and was removed through a small skin incision in the extremity. The average time from scoliosis surgery until the rods were found at a distant site was 9 years.
  
  
  CONCLUSIONS
  The scoliosis surgery was effective in preventing further deformity; however, in two cases there was nonunion at one or two levels. Patients are asymptomatic at the present time and followed at regular intervals to see if further surgery is necessary to correct areas of nonunion.
authors.affiliation: Lake Norman Spine Center, 170 Medical Park Road, Suite 102, Mooresville, NC 28117, USA. kwood0306@hotmail.com
authors.forename: Kenneth E
authors.initials: KE
authors.lastname: Wood
authors.forename: Robert D
authors.initials: RD
authors.lastname: Fitch
authors.forename: Douglas C
authors.initials: DC
authors.lastname: Burton
authors.forename: C Jane
authors.initials: CJ
authors.lastname: Keiger
mesh_terms: D000328:Adult; D001858:Bone Nails; D005260:Female; D005548:Foreign-Body Migration / Q000000981:diagnostic imaging*; D006801:Humans; D007866:Leg; D008297:Male; D011183:Postoperative Complications / Q000000981:diagnostic imaging*; D011475:Prosthesis Failure; D011859:Radiography; D012187:Retroperitoneal Space; D012600:Scoliosis / Q000601:surgery*; D013123:Spinal Fusion / Q000009:adverse effects*; D055815:Young Adult