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  4. Caudad Insertion of Pedicle Screws Facilitates Interbody Distraction During Spondylolisthetic Vertebrae Restoration: A Retrospective Study

Caudad Insertion of Pedicle Screws Facilitates Interbody Distraction During Spondylolisthetic Vertebrae Restoration: A Retrospective Study

Pain Ther, 2021 · DOI: https://doi.org/10.1007/s40122-021-00315-3 · Published: September 15, 2021

SurgerySpinal Disorders

Simple Explanation

Degenerative lumbar spondylolisthesis (DLS) is a common spinal condition causing clinical symptoms and economic burden. This study investigates the correlation between screw insertion trajectory and intervertebral space height recovery after surgery for DLS. The Caudad insertion trajectory technique of pedicle screws may be an ideal alternative for DLS treatment.

Study Duration
May 2015 to October 2019
Participants
48 patients (17 men, 31 women)
Evidence Level
Not specified

Key Findings

  • 1
    Changes in disc height (DH) were significantly associated with lower pedicle screw angle.
  • 2
    Multivariate regression analysis showed a significant negative correlation between the upper and lower pedicle screw angles and the change in DH.
  • 3
    At 2 weeks post-operation, VAS score for low back pain and the ODI had improved significantly compared to pre-operation.

Research Summary

The study investigated the impact of pedicle screw insertion trajectory on disc height recovery after fusion surgery for degenerative lumbar spondylolisthesis (DLS). The results suggest that the Caudad insertion trajectory technique of pedicle screws may be an ideal alternative for the treatment of DLS. The study found a significant negative correlation between pedicle screw angles and changes in disc height, indicating that the screw trajectory affects intervertebral space height recovery.

Practical Implications

Surgical Technique

Caudad insertion trajectory of pedicle screws can be considered an effective alternative for DLS treatment.

Disc Height Restoration

The angle of pedicle screw insertion significantly impacts the recovery of intervertebral space height after fusion.

Clinical Outcomes

Improved VAS and ODI scores post-surgery suggest potential benefits of the Caudad insertion trajectory.

Study Limitations

  • 1
    Retrospective design
  • 2
    Small sample size
  • 3
    Short follow-up time

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