ArticleBMC musculoskeletal disorders2024
A M-PEEK rod system to stabilize spinal motion after graded facetectomy: a finite element study.
Article in BMC musculoskeletal disorders, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Radiological Outcomes of PEEK Versus Rigid Rod Stabilization in Lumbar Spinal Stenosis Surgery: The Role of Preoperative and Postoperative Findings in Adjacent Segment Disease.Diagnostics (Basel, Switzerland) · 2026Article
- Clinical efficacy of unilateral biportal endoscopic technique for adjacent segment pathology following lumbar fusion.Journal of orthopaedic surgery and research · 2025Article
- Novel anatomical landmark guided puncture method in L4/L5 spine posterior interlaminar endoscopic surgery: a technical note and case series.Frontiers in surgery · 2025Article
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3 authors.
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Abstract
backgroundResecting the facet joint to relieve nerve pain can lead to spinal instability, deformity, and abnormal pressure on the anterior of the intravertebral disc. To mitigate these issues, surgeons often limit the amount of bone removed during facetectomy or stabilize the spine by fusion to maintain lumbar stability. This study aimed to assess how a M-PEEK rod system influenced the stability of the lumbar spine during graded facetectomy.
methodsFacetectomy was performed on a validated L1-L5 finite element model which was then simulated both with and without the M-PEEK rod system.
resultsIn extension, models implanted with M-PEEK in the interspinous space of L3/L4 experienced a 35.2% decrease in range of motion (ROM) at L3/L4, while others saw an 8.4-24.8% increase. For axial rotation, the ROM at L3/L4 increased by 2.2-5.4% in models with the M-Rod, and by 4.9-12.9% in models without the implant. In lateral flexion, the ROM at L3/L4 increased by 8.4-14.3% in models without a PEEK M-Rod (facetectomy only), with adjacent segments experiencing a 6.5% decrease in ROM in the implanted models. Overall, the difference in ROM between the intact and implanted models was minimal.
conclusionsFacetectomy involving the removal of 50% or more of the facet joint significantly increases range of motion and maximum intradiscal pressure, potentially accelerating disc degeneration, as shown in our finite element study. Stabilizing the segment with an M-PEEK rod may limit excessive motion, providing stability and maintaining intradiscal pressure closer to that of an intact model.
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