ArticleJournal of orthopaedic surgery and research2021
The impact of different artificial disc heights during total cervical disc replacement: an in vitro biomechanical study.
Article in Journal of orthopaedic surgery and research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 18 citations in OpenAlex.
- Preoperative Disc Height as a Prognostic Factor in Laminoplasty for Cervical Spondylotic Myelopathy with Degenerative Spondylolisthesis.Spine surgery and related research · 2026Article
- Assessing cervical intervertebral disc height on MRI and X-ray versus CT; a single center retrospective cohort study.Brain & spine · 2026Article
- Biomechanical Effects of Zero-P Height on Anterior Cervical Discectomy and Fusion: A Finite Element Study.Orthopaedic surgery · 2025Article
- The Influence of Zero-Profile Implant Selection on the Outcomes of Anterior Cervical Discectomy and Fusion.Orthopaedic surgery · 2025Article
- Optimization of a bearing geometry for a cervical total disc replacement.Frontiers in bioengineering and biotechnology · 2025Article
- Facet joint loading after 1-, 2- and 3-level cervical disc arthroplasty: a comparison of spiked versus keeled baseplates.North American Spine Society journal · 2024Article
- Range of motion after 1, 2, and 3 level cervical disc arthroplasty.North American Spine Society journal · 2023Article
- Measurement of anatomical parameters of anterior transpedicular root screw intervertebral fusion system of cervical spine.BMC musculoskeletal disorders · 2023Article
- AssessingJournal of spine surgery (Hong Kong) · 2023Article
- Biomechanical properties of a novel cervical spine implant with elastic deformation: a cadaveric study.Frontiers in bioengineering and biotechnology · 2023Article
- Finite element analysis of optimized novel additively manufactured non-articulating prostheses for cervical total disc replacement.Frontiers in bioengineering and biotechnology · 2023Article
- Comparative biomechanical analyses of lower cervical spine post anterior fusion versus intervertebral disc arthroplasty: A geometrically patient-specific poroelastic finite element investigation.Journal of orthopaedic translation · 2022Article
- Comparison of Radiographic Reconstruction and Clinical Improvement between Artificial Cervical Disc Replacement and Anterior Cervical Discectomy and Fusion.Pain research & management · 2022Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
backgroundThe principles of choosing an appropriate implant height remain controversial in total cervical disc replacement (TDR). By performing an in vitro biomechanical study and exploring the biomechanical impact of implant height on facet joint and motion function, the study aimed to offer valid proposals regarding implant height selection during TDR.
methodsA total of 6 fresh-frozen male cadaveric cervical spines (C2-C7) with 5 mm intervertebral disc height at C5/6 level were enrolled in the study. Specimens with the intact condition and with different height artificial discs were tested. Facet joint pressures and range of motion under each condition were recorded using a specialized machine.
resultsThe artificial disc heights that were involved in this study were 5 mm, 6 mm, and 7 mm. The range of motion decreased along with the increment of implant height, while facet joint pressure showed an opposite trend. Specimens with a 5 mm implant height could provide a similar range of motion (11.8° vs. 12.2° in flexion-extension, 8.7° vs. 9.0° in rotation, 7.9° vs. 8.2° in lateral bending) and facet joint pressure (27.8 psi vs. 25.2 psi in flexion, 59.7 psi vs. 58.9 psi in extension, 24.0 psi vs. 22.7 psi in rotation, 32.0 psi vs. 28.8 psi in lateral bending) compared with intact specimens. Facet joint pressure of specimens with 6 mm implant height (≥ 1 mm in height) increased during flexion at the C5-6 segment (30.4 psi vs. 25.2 psi, P = 0.076). However, specimens with 7 mm implant height (≥ 2 mm in height) showed a significant reduction in motion (9.5° vs. 12.2° in flexion-extension, P < 0.001) and increment of facet joint pressure at C5-6 segment (44.6 psi vs. 25.2 psi in flexion, 90.3 psi vs. 58.9 psi in extension, P < 0.0001) and adjacent segments.
conclusionsThis study suggested that an appropriate artificial disc height can achieve near-normal biomechanical properties and is recommended. We should be very cautious when using artificial discs ≥ 1 mm in height compared to normal. However, implants ≥ 2 mm in height compared to normal significantly increased the facet joint pressure and decreased the range of motion; therefore, it should not be used in clinical practice.
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