title: Risk Factors of Postoperative Low Back Pain for Lumbar Spine Disease.
abstract: OBJECTIVE
  A retrospective study was conducted to clarify the risk factors of postoperative low back pain (LBP) for lumbar spine disease.
  
  
  METHODS
  A total of 401 patients who underwent lumbar operation between January 2011 and December 2011 were included in this analysis. We investigated patient characteristics and surgical approaches and also compared the radiographic characteristics.
  
  
  RESULTS
  The mean visual analogue scale (VAS) score decreased dramatically after the operation. The mean preoperative VAS score was greater in patients underwent posterior lumbar interbody fusion (PLIF) with longer duration of symptoms, longer operation time, and severe lumbar multifidus (LM) intramuscular adipose tissue (IMAT). The preoperative VAS score was dramatically lower in patients with lumbar herniation. The postoperative VAS score was dramatically lower in patients who underwent PLIF with longer operation time and mild LM IMAT. Postoperative LBP disappeared more often in patients who underwent PLIF with longer operation times. The number of operative levels and type of lumbar spine disease also were associated with postoperative LBP.
  
  
  CONCLUSIONS
  Type of surgery, operation time, number of operative level, and type of disease were risk factors for the postoperative LBP. Patients underwent PLIF with shorter symptom duration, longer operation time severe LM IMAT, and lumber spondylolisthesis reported more severe LBP before the operation. Patients underwent discectomy with shorter operation times.
authors.affiliation: 1st Affiliated Hospital, Harbin Medical University, Harbin, Heilongjaing Province, China.
authors.forename: Jiaao
authors.initials: J
authors.lastname: Gu
authors.affiliation: 1st Affiliated Hospital, Harbin Medical University, Harbin, Heilongjaing Province, China.
authors.forename: Fulin
authors.initials: F
authors.lastname: Guan
authors.affiliation: Department of Epidemiology, Harbin Medical University, Harbin, Heilongjaing Province, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Zhu
authors.affiliation: 1st Affiliated Hospital, Harbin Medical University, Harbin, Heilongjaing Province, China.
authors.forename: Guofa
authors.initials: G
authors.lastname: Guan
authors.affiliation: 1st Affiliated Hospital, Harbin Medical University, Harbin, Heilongjaing Province, China.
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Chi
authors.affiliation: 1st Affiliated Hospital, Harbin Medical University, Harbin, Heilongjaing Province, China.
authors.forename: Haojun
authors.initials: H
authors.lastname: Wang
authors.affiliation: 1st Affiliated Hospital, Harbin Medical University, Harbin, Heilongjaing Province, China. Electronic address: haerbinmed@aliyun.com.
authors.forename: Zhange
authors.initials: Z
authors.lastname: Yu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015984:Causality; D002681:China / Q000453:epidemiology; D015897:Comorbidity; D017586:Diskectomy / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D019635:Neurosurgical Procedures; D011183:Postoperative Complications / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors; D013122:Spinal Diseases / Q000175:diagnosis / Q000453:epidemiology* / Q000601:surgery*; D013123:Spinal Fusion / Q000706:statistics & numerical data*; D016896:Treatment Outcome; D055815:Young Adult
keywords: Lumbar spine disease; Postoperative low back pain; Risk factor