We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A study to compare the efficacy of polyether ether ketone rod device with titanium devices in posterior spinal fusion in a canine model.
- Authors
Nanxiang Wang; Huanxin Xie; Chunyang Xi; Han Zhang; Jinglong Yan
- Abstract
Background: The benefits of posterior lumbar fusion surgery with orthotopic paraspinal muscle-pediculated bone flaps are well established. However, the problem of non-union due to mechanical support is not completely resolved. The aim of the study was to compare the efficacy of polyether ether ketone (PEEK) rod device with conventional titanium devices in the posterior lumbar fusion surgery with orthotopic paraspinal muscle-pediculated bone flaps. Methods: This was a randomized controlled study with an experimental animal model. Thirty-two mongrel dogs were randomly divided into two groups--control group (n = 16), which received the titanium device and the treatment group (n = 16), which received PEEK rods. The animals were sacrificed 8 or 16 weeks after surgery. Lumbar spines of dogs in both groups were removed, harvested, and assessed for radiographic, biomechanical, and histological changes. Results: Results in the current study indicated that there was no significant difference in the lumbar spine of the control and treatment groups in terms of radiographic, manual palpation, and gross examination. However, certain parameters of biomechanical testing showed significant differences (p < 0.05) in stiffness and displacement, revealing a better fusion (treatment group showed decreased stiffness with decreased displacement) of the bone graft. Similarly, the histological analysis also revealed a significant fusion mass in both treatment and control groups (p < 0.05). Conclusions: These findings revealed that fixation using PEEK connecting rod could improve the union of the bone graft in the posterior lumbar spine fusion surgery compared with that of the titanium rod fixation.
- Subjects
ANIMAL experimentation; BONE grafting; DOGS; ETHERS; KETONES; LUMBAR vertebrae; MATERIALS testing; MATHEMATICAL models; PALPATION; POLYETHYLENE glycol; SPINAL fusion; TITANIUM; THEORY; DATA analysis software; DESCRIPTIVE statistics
- Publication
Journal of Orthopaedic Surgery & Research, 2017, Vol 12, p1
- ISSN
1749-799X
- Publication type
Article
- DOI
10.1186/s13018-017-0543-x