International Orthopaedics

, Volume 43, Issue 2, pp 351–357 | Cite as

Comparison between free-hand and O-arm-based navigated posterior lumbar interbody fusion in elderly cohorts with three-level lumbar degenerative disease

  • Yucheng Wang
  • Kangwu Chen
  • Hao Chen
  • Kai Zhang
  • Jian Lu
  • Haiqing MaoEmail author
  • Huilin YangEmail author
Original Paper



This retrospective cohort study aims to evaluate the effects of introducing the O-arm-based navigation technique into the traditional posterior lumbar interbody fusion (PLIF) procedure treating elderly patients with three-level lumbar degenerative diseases.


Forty-one consecutive elderly patients were enrolled according to the criteria. There were 21 patients in the free-hand group and 20 patients in the O-arm group. Both two groups underwent the PLIF with or without the O-arm-based navigation technique. The demographic features, clinical data and outcomes, and radiological information were collected for further analysis.


The average follow-up time was 18.3 (range, 12–28) months in the free-hand group and 16.7 (range, 12–24) months in the O-arm group. Comparison between two groups revealed no significant difference regarding demographic features. The operation time took in the navigation group was significantly less than that in the free-hand group (222.55 ± 38.00 mins versus 255.19 ± 40.26 mins, P < 0.05). Both VAS and ODI were improved post-operatively in two groups while comparison between groups showed no difference. The accuracy rate of pedicle screw positioning was 88.7% in the free-hand group to 96.9% in the O-arm group (P < 0.05).


The O-arm-based navigation is an efficacious auxiliary technique which could significantly improve the accuracy of pedicle screw insertion, especially in cases of patients with complex anatomic degenerative diseases, without sacrificing the feasibility and reliable outcome of traditional PLIF.


Posterior lumbar interbody fusion O-arm-based navigation Three-level Elderly patients Lumbar degenerative disease 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.


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Copyright information

© SICOT aisbl 2018

Authors and Affiliations

  1. 1.Department of Orthopedic SurgeryThe First Affiliated Hospital of Soochow UniversitySuzhouPeople’s Republic of China

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