title: Pelvic Reconstruction Surgery Using a Dual-Rod Technique with Diverse U-Shaped Rods After Posterior En Bloc Partial Sacrectomy for a Sacral Tumor: 2 Case Reports and a Literature Review.
abstract: BACKGROUND
  Spinopelvic reconstruction after sacrectomy for a sacropelvic tumor can result in various complications and requires a highly complicated surgical technique. We report 2 cases of pelvic reconstruction surgery using diverse U-shaped rods (USRs) after partial sacrectomy.
  
  
  METHODS
  A partial sacrectomy was performed for 2 different cases: one case was a metastatic sacral tumor and the other was a chordoma. In the first case, reconstruction was completed with an inner straight rod and an outer USR. The other patient underwent reconstruction using an inner USR and an outer straight rod. In both cases, there was no instrument failure, and the lumbosacral junction was reconstructed in balance. One of the patients died of metastatic lung cancer, and the other patient is alive and has experienced no other complications.
  
  
  CONCLUSIONS
  A pelvic reconstruction technique using diverse USRs showed good spinopelvic stability without complications. This technique may be a surgical option for reconstructive surgery after partial sacrectomy.
authors.affiliation: Department of Medicine, Graduate School, Kyung Hee University, Seoul, South Korea.
authors.forename: Man Kyu
authors.initials: MK
authors.lastname: Choi
authors.affiliation: Department of Neurosurgery, Kyung Hee University Hospital at Gangdong, Seoul, South Korea. Electronic address: apuzzo@hanmail.net.
authors.forename: Dae Jean
authors.initials: DJ
authors.lastname: Jo
authors.affiliation: Department of Neurosurgery, Kyung Hee University Hospital, Seoul, South Korea.
authors.forename: Sung Bum
authors.initials: SB
authors.lastname: Kim
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging / Q000556:secondary / Q000601:surgery*; D000368:Aged; D002817:Chordoma / Q000000981:diagnostic imaging / Q000601:surgery*; D003110:Colonic Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D019635:Neurosurgical Procedures / Q000295:instrumentation / Q000379:methods*; D010384:Pelvic Bones / Q000000981:diagnostic imaging / Q000601:surgery*; D011859:Radiography; D019651:Plastic Surgery Procedures / Q000295:instrumentation / Q000379:methods*; D012447:Sacrum / Q000000981:diagnostic imaging / Q000601:surgery*; D013125:Spinal Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary / Q000601:surgery*
keywords: En bloc resection; Pelvic reconstruction; Sacrectomy; U-shaped rod