title: [Treatment of unstable lumbar intervertebral disc herniation by modified lamina osteotomy replantation].
abstract: OBJECTIVE
  To evaluate the clinical effects of the modified lamina replantation for the treatment of unstable lumbar intervertebral disc herniation.
  
  
  METHODS
  From March 2009 to August 2011,63 patients with unstable lumbar intervertebral disc herniation were treated by discectomy, interbody fusion, pedicle screw fixation, and modified lamina replantation. There were 33 males and 30 females with an average age of 48.4 years old ranging from 22 to 68 years old. The average duration of disease was 38.8 months ranging from 3 months to 13 years. All patients had lower back and leg pains. X-ray,CT and MR results showed unstable lumbar intervertebral disc herniation. Preoperative and postoperative ODI, JOA scores, complication incident rates,radiographic healing rates,and lower back and leg pain recurrence rates were observed and recorded.
  
  
  RESULTS
  Sixty-two incisions were healed at first stage, 1 at second stage. There were no complications such as deep vein thrombosis, intervertebral infection and so on. Sixty-one patients were followed up for more than one year, and the mean duration was 33 months. Nerve and dural injury occurred in 2 patients and 1 patient respectively. One-year fusion happened in 58 patients while the recurrence of lower back pain and leg pain after 1 year were noted in 4 patients and 1 patient respectively. ODI, and JOA scores were respectively re-assessed at 2 weeks, 6 months and 1 year after the operation, and the results showed a significant difference from the preoperative scores (P < 0.05).
  
  
  CONCLUSIONS
  Modified lamina replantation for unstable lumbar intervertebral disc herniation showed lower rates of dural and nerve damage, as well as a higher lamina healing rate, lower back and leg pain recovery rate, and a better clinical score. It is a safe and efficient operation choice for lumbar spine surgery.
authors.affiliation: Department of Orthopaedics, Shaanxi Provincial People's Hospital, the Third Affiliated Hospital, Xi'an Jiaotong University of Medicine, Xi'an 710068, Shaanxi, China.
authors.forename: Cong
authors.initials: C
authors.lastname: Liu
authors.affiliation: Department of Orthopaedics, Shaanxi Provincial People's Hospital, the Third Affiliated Hospital, Xi'an Jiaotong University of Medicine, Xi'an 710068, Shaanxi, China.
authors.forename: Hong-Hai
authors.initials: HH
authors.lastname: Xu
authors.affiliation: Department of Orthopaedics, Shaanxi Provincial People's Hospital, the Third Affiliated Hospital, Xi'an Jiaotong University of Medicine, Xi'an 710068, Shaanxi, China.
authors.forename: Qing-Yang
authors.initials: QY
authors.lastname: Zou
authors.affiliation: Department of Orthopaedics, Shaanxi Provincial People's Hospital, the Third Affiliated Hospital, Xi'an Jiaotong University of Medicine, Xi'an 710068, Shaanxi, China.
authors.forename: Xiong
authors.initials: X
authors.lastname: Guo
authors.affiliation: Department of Orthopaedics, Shaanxi Provincial People's Hospital, the Third Affiliated Hospital, Xi'an Jiaotong University of Medicine, Xi'an 710068, Shaanxi, China.
authors.forename: Zong-Zhi
authors.initials: ZZ
authors.lastname: Liu
authors.affiliation: Department of Orthopaedics, Shaanxi Provincial People's Hospital, the Third Affiliated Hospital, Xi'an Jiaotong University of Medicine, Xi'an 710068, Shaanxi, China.
authors.forename: Zhen-Qun
authors.initials: ZQ
authors.lastname: Luo
authors.affiliation: Department of Orthopaedics, Shaanxi Provincial People's Hospital, the Third Affiliated Hospital, Xi'an Jiaotong University of Medicine, Xi'an 710068, Shaanxi, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Orthopaedics, Shaanxi Provincial People's Hospital, the Third Affiliated Hospital, Xi'an Jiaotong University of Medicine, Xi'an 710068, Shaanxi, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Qi
authors.affiliation: Department of Orthopaedics, Shaanxi Provincial People's Hospital, the Third Affiliated Hospital, Xi'an Jiaotong University of Medicine, Xi'an 710068, Shaanxi, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Orthopaedics, Shaanxi Provincial People's Hospital, the Third Affiliated Hospital, Xi'an Jiaotong University of Medicine, Xi'an 710068, Shaanxi, China.
authors.forename: Peng-Yu
authors.initials: PY
authors.lastname: Ren
authors.affiliation: Department of Orthopaedics, Shaanxi Provincial People's Hospital, the Third Affiliated Hospital, Xi'an Jiaotong University of Medicine, Xi'an 710068, Shaanxi, China.
authors.forename: Ya-Yi
authors.initials: YY
authors.lastname: Fan
mesh_terms: D000328:Adult; D000368:Aged; D001863:Bone Screws; D017586:Diskectomy; D005260:Female; D006801:Humans; D007403:Intervertebral Disc; D007405:Intervertebral Disc Displacement / Q000601:surgery*; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods*; D012092:Replantation / Q000379:methods*; D055815:Young Adult