Comparative effectiveness of PEEK rods versus titanium alloy rods in lumbar fusion: A preliminary report

Qi, Lei; Li, Mu; Zhang, Shuai; Xue, Jingsong; Si, Huaijun

doi:10.1007/s00701-013-1772-3

Cited by 34 publications

(37 citation statements)

References 24 publications

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“…There are also biomechanical studies of the stability of PEEK rods. Static compressive bending (67° displacement) and torsion testing (30° rotation) did not break the rod and did not cause plastic deformation (30). Chou et al stated that there was no loss of stability in PEEK rods, whereas there was loss of stability in titanium rods in a fatigue test involving 90.000 flexion/extension cycles (11).…”

Section: A B Cmentioning

confidence: 99%

“…Highsmith et al was the first to report positive results in only three patients (17). After that, biomechanical studies were carried out on cadavers and using the finite element model with the PEEK rod, which was compared to rigid systems and measured patient satisfaction (16,22,28,30,37). In these studies, PEEK rods were determined to have several advantages with regard to load sharing compared with rigid systems.…”

Section: A B Cmentioning

confidence: 99%

“…To the best of our knowledge, there is no other study considering lumbar lordosis with PEEK rods pre-and postoperatively except for Qi et al's study that had a limited number of patients and only short-segment stabilized patients (30).…”

Section: A B Cmentioning

confidence: 99%

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Polyetheretherketone (peek) rods in lumbar spine degenerative disease: mid-term results in a patient series involving radiological and clinical assessment

Öğrenci

Koban²,

Yaman³

et al. 2018

Turkish Neurosurgery

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Most important among these are adjacent segment disease (ASD) and pseudoarthrosis (3). Rigid stabilization decreases the range of motion of the spinal column and causes increased stress on the adjacent segments postoperatively. Increased stress on the bone-screw interface also leads to instrumentation problems and pseudoarthrosis (35). Dynamic █ INTRODUCTION S tabilization is sometimes required to relieve the symptoms of degenerative spinal disease. Rigid systems are commonly used to solve these problems. Although the short-term results of these implants have been promising, problems occur at high rates during the long-term follow-up. AIM: To evaluate the satisfaction of patients operated due to degenerative lumbar spinal diseases with dynamic stabilization placing polyetheretherketone (PEEK) rods and to share their radiological and clinical results (mid-term) with visual analogue scale (VAS) and Oswestry disability index (ODI) scores. MATERIAL and METHODS: The preoperative and postoperative low back pain, leg pain VAS and ODI scores of 172 patients who were operated for degenerative spinal diseases, were evaluated. Preoperative and postoperative lumbar lordosis were compared. The patients included to the study were evaluated postoperatively around the 2 nd year with lumbar MRI by means of adjacent segment disease (ASD) and additional problems. RESULTS: A statistically but not radiologically-by means of sagittal profile reconstruction-significant increase in lumbar lordosis angle was achieved. Significant improvement was observed in the comparison of preoperative and postoperative period in the analysis of patients' preoperative low back pain (p<0.0001), and decompression-related leg pain VAS scores (p<0.0001). Significant improvement was also observed in the ODI scores of the patients (p<0.0001). Among 172 patients with dynamic stabilization, there were 10 patients who underwent reoperation (5.8%). CONCLUSION: Although it is statistically significant, it can be seen that the lumbar lordosis can not be corrected at significant degrees radiographically in the operations performed with the PEEK rod. Dynamic stabilization with PEEK rod is insufficient for sagittal correction, but the mid-term results reached satisfactory reoperation rates clinically outcomes. Rate of ASD is quite low in stabilization with PEEK rod.

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Section: A B Cmentioning

confidence: 99%

Section: A B Cmentioning

confidence: 99%

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Polyetheretherketone (peek) rods in lumbar spine degenerative disease: mid-term results in a patient series involving radiological and clinical assessment

Öğrenci

Koban²,

Yaman³

et al. 2018

Turkish Neurosurgery

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“…Compared with the titanium rod (114 GPa), the less rigid PEEK rod (3.2 GPa) may alter load-bearing and control abnormal motion, which in consequence may promote the intervertebral bone fusion rate according to Wolff’s law [ 10 – 12 ]. Several clinical studies concerning the use of PEEK rod systems for fusion procedure are available in the published literature [ 13 – 16 ]. However, due to their small sample size, short follow-up and conflicting results, clinical outcomes are still controversial.…”

Section: Introductionmentioning

confidence: 99%

Non-fusion procedure using PEEK rod systems for lumbar degenerative diseases: clinical experience with a 2-year follow-up

Huang

Chang

Song

et al. 2016

BMC Musculoskelet Disord

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BackgroundPolyetheretherketone (PEEK) rod system is a novel pedicle-based dynamic stabilization system. This study evaluated clinical and radiographic outcomes of non-fusion surgery by PEEK rod systems for treatment of degenerative lumbar diseases with a 2-year follow-up.MethodsFrom February 2012 to October 2012, 38 patients who underwent non-fusion surgery using PEEK rod systems were included in the study. Data on Oswestry Disability Index (ODI) score and Japanese Orthopaedics Association (JOA) score were collected and radiographs were obtained to evaluate disc height index (DHI) and range of motion (ROM) at each interval.ResultsBoth JOA and ODI scores significantly improved postoperatively. DHI showed a slight increase immediately after the surgery but gradually dropped below preoperative levels. Mean ROM values changed from 8.8° preoperatively to 1.8° at the 2-year follow-up point. Screw loosening occurred in one case at the 2-year follow-up.ConclusionsThe preliminary results indicated a significant improvement in clinical outcomes and advantageous implant safety. The non-fusion procedure using PEEK rod systems might be a viable alternative for treatment of lumbar degenerative diseases. The distraction technique needs to be improved for better postoperative DHI.

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“…There are attractive advantages of PEEK, such as biocompatible to the spinal cord (Rivard CH, 2002) and radiolucent for evaluation of bony fusion (Ferguson SJ, 2006). PEEK was initially used as intervertebral cages in the cervical and lumbar spine, then rods in posterior and anterior screw-rod fixations of lumbar spine (De Iure F, 2012; Qi L, 2013;Ormond DR, 2015), and is often considered as a semi-rigid fixation which reduces stress shielding (Turner JL, 2010;Abode-Iyamah K, 2014).…”

Section: Introductionmentioning

confidence: 99%

Kinematics and load-sharing of an anterior thoracolumbar spinal reconstruction construct with PEEK rods: An in vitro biomechanical study

Zhou

Huang

Liu

et al. 2016

Clinical Biomechanics

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The polyetheretherketone rod construct allowed more motion compared to the titanium rod construct, but provided stability in flexion and lateral bending without preload, and flexion and extension under preload. The anterior graft shared higher load under preload, particularly for the polyetheretherketone rod construct. The results of this study suggest that rigidity of rods in the anterior reconstruction affects kinematic behavior and load sharing.

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Comparative effectiveness of PEEK rods versus titanium alloy rods in lumbar fusion: A preliminary report

Abstract: PEEK rods offer a similar radiological and clinical efficacy as titanium alloy rods. PEEK rods, as a semirigid implant with unique characteristics, may be an effective alternative treatment for patients with degenerative lumbar disease in lumbar fusion.

Cited by 34 publications

References 24 publications

Polyetheretherketone (peek) rods in lumbar spine degenerative disease: mid-term results in a patient series involving radiological and clinical assessment

Polyetheretherketone (peek) rods in lumbar spine degenerative disease: mid-term results in a patient series involving radiological and clinical assessment

Non-fusion procedure using PEEK rod systems for lumbar degenerative diseases: clinical experience with a 2-year follow-up

Kinematics and load-sharing of an anterior thoracolumbar spinal reconstruction construct with PEEK rods: An in vitro biomechanical study

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