title: Metal hypersensitivity in patient with posterior lumbar spine fusion: a case report and its literature review.
abstract: BACKGROUND
  Metal hypersensitivity, mostly documented in prosthesis implantation, is a rare complication after arthroplasty. Such cases become rarer and more difficult to diagnose when it comes to lumbar surgery.
  
  
  METHODS
  We present the case of a 52-year-old female patient with reoccured low back pain and sciatica after posterior lumbar decompression and fusion (PLDF) for her lumbar disc herniation. The initial clinical and radiological examinations showed no pathologies. Further imaging and histopathological studies in later period revealed an aseptic loosening of the hardware and an aseptic inflammatory response which was diagnosed to be metal hypersensitivity. To our knowledge, few allergic cases in the matter of spinal fusion were reported so far.
  
  
  CONCLUSIONS
  Metal hypersensitivity after spinal fusion should be considered in patients with representation of postoperative back pain. And elaborate history taking would conduce a lot to it's diagnose.
authors.forename: Xianping
authors.initials: X
authors.lastname: Shang
authors.affiliation: Department of Spine Surgery, First Affiliated Hospital of Dalian Medical University, Dalian 116011, People's Republic of China. whwl2003@tom.com.
authors.forename: Ling
authors.initials: L
authors.lastname: Wang
authors.forename: Depeng
authors.initials: D
authors.lastname: Kou
authors.forename: Xunyuan
authors.initials: X
authors.lastname: Jia
authors.forename: Xianglong
authors.initials: X
authors.lastname: Yang
authors.forename: Meng
authors.initials: M
authors.lastname: Zhang
authors.forename: Yilong
authors.initials: Y
authors.lastname: Tang
authors.forename: Pengrui
authors.initials: P
authors.lastname: Wang
authors.forename: Shijin
authors.initials: S
authors.lastname: Wang
authors.forename: Yan
authors.initials: Y
authors.lastname: Xu
authors.forename: Hong
authors.initials: H
authors.lastname: Wang
mesh_terms: D003877:Dermatitis, Contact / Q000000981:diagnostic imaging* / Q000601:surgery; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging*; D008670:Metals / Q000009:adverse effects*; D008875:Middle Aged; D011859:Radiography; D013123:Spinal Fusion / Q000009:adverse effects* / Q000295:instrumentation; D016896:Treatment Outcome
chemical_list: D008670:Metals