Differences in cervical sagittal parameters and muscular function among subjects with different cervical spine alignments: a surface electromyography-based cross-sectional study.

Dian Wang, Shuanghe Liu, Yibo Liu, Zheng Zeng

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Article in PeerJ, 2024. 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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1 citing paper in PubMed.

Biomechanical mechanisms of multidirectional dynamic compensatory muscle fatigue induced by abnormal cervical curvature: a cross-sectional case-control study based on surface electromyography and Cobb angle.Frontiers in sports and active living · 2025
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4 authors.

Dian WangDepartment of Orthopaedic Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.

Shuanghe LiuDepartment of Orthopaedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.

Yibo LiuDepartment of Orthopaedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.ORCID 0009-0001-5677-2734

Zheng ZengDepartment of Orthopaedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.

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6 · The paper itself

Abstract

Background: We analyzed cervical sagittal parameters and muscular function in different cervical kyphosis types. Methods: This cross-sectional study enrolled subjects with cervical spine lordosis (cervical curvature < -4°) or degenerative cervical kyphosis (cervical curvature > 4°), including C-, S-, and R-type kyphosis. We recorded patients' general information (gender, age, body mass index), visual analog scale (VAS) scores, and the Neck Disability Index (NDI). Cervical sagittal parameters including C2-C7 Cobb angle (Cobb), T1 slope (T1S), C2-C7 sagittal vertical axis (SVA), spino-cranial angle (SCA), range of motion (ROM), and muscular function (flexion-relaxation ratio (FRR) and co-contraction ratio (CCR) of neck/shoulder muscles on surface electromyography). Differences in cervical sagittal parameters and muscular function in subjects with different cervical spine alignments, and correlations between VAS scores, NDI, cervical sagittal parameters, and muscular function indices were statistically analyzed. Results: The FRR of the splenius capitis (SPL), upper trapezius (UTr), and sternocleidomastoid (SCM) were higher in subjects with cervical lordosis than in subjects with cervical kyphosis. FRR Conclusion: Cervical sagittal parameters differed among different cervical kyphosis types. FRRs and CCRs were significantly worse in R-type kyphosis than other kyphosis types. Cervical muscular functions were correlated with cervical sagittal parameters and morphological alignment.

Indexed as

Cervical VertebraeElectromyographyKyphosisLordosisNeck MusclesRange of Motion, ArticularAdultAgedCross-Sectional StudiesFemaleHumansMaleMiddle AgedCervical kyphosisCervical sagittal parametersFlexion and relaxation ratioMuscular functionSurface electromyography

Identifiers

PMID39346046

DOI10.7717/peerj.18107

PMCPMC11438432

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