ArticleBMC musculoskeletal disorders2025
Cervical intradiscal pressure responses to end-range supine postures: a cadaveric investigation.
Article in BMC musculoskeletal disorders, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed.
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundCadaveric studies suggest neck postures may affect cervical intradiscal pressure (CIDP) and potentially contribute to intervertebral disc (IVD) pathologies. Despite neck flexion and protraction posture prevalence and potential impact on cervical IVD health, no studies have investigated CIDP during end-range protraction and retraction. This study investigated (1) CIDP differences between cervical traction, six sagittal plane cervical end-ranges, and neutral posture; (2) CIDP and segmental cervical range of motion (ROM) correlation; and (3) CIDP measurement reliability.
methodsSeven cadaveric specimens, mean age 80.6±7.2 years, had cervical segmental ROM assessed by lateral radiographs and CIDP responses measured by fiberoptic pressure sensors in C4-5, C5-6, and C6-7 IVDs for supine end-range chin to neck, chin to sternum, protraction-flexion, occiput to neck, occiput to thorax, retraction-extension, and neutral traction.
resultsFriedman tests revealed greater CIDP in (1) chin to sternum as compared to traction at C4-5, C5-6 and C6-7 (p < .02); (2) chin to sternum as compared to retraction-extension at C5-6 and C6-7 (p = .027); and (3) chin to sternum as compared to protraction-flexion at C5-6 (p = .042). End-range postures demonstrated moderate effect sizes on CIDP at C4-5 (ES = 0.31), C5-6 (ES = 0.46), and C6-7 (ES = 0.36) using Kendall's W. Strong correlations between cervical segmental ROM and CIDP were identified at C4-5 chin to neck, r
conclusionsConsistent chin to sternum increases and traction decreases in CIDP occurred at all cervical IVD levels. The CIDP tended to increase during flexion end-ranges at all IVD levels, while extension, protraction, and retraction tended to decrease at C5-6, C6-7 and increase at C4-5. Large positive or negative CIDP variations with even larger standard deviations were observed within and between cervical IVD segments during various postures.
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