Kinematic study of the relation between the instantaneous center of rotation and degenerative changes in the cervical intervertebral disc

Liu, Baoge; Liu, Zhenyu; Hoof, Tom Van; Kalala, Jean-Pierre; Zeng, Zheng; Xiao, Lin

doi:10.1007/s00586-014-3431-7

Cited by 40 publications

(31 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During flexion\extension, as expected, the HAM in each intervertebral motion segment was nearly perpendicular to the sagittal plane of the inferior bone for each motion segment. The intersection of the HAM vector and the sagittal plane during flexion\extension was in agreement with previous reports that calculated a single center of rotation point using static full flexion and full extension radiographs (Amevo et al, 1991;Liu et al, 2014;van Mameren et al, 1992), as well as the centrode during dynamic flexion\extension in an older group of individuals (Anderst et al, 2013a). In each of these studies, the center or rotation (or the centrode, in the case of the dynamic motion study) was located progressively more superior and anterior with respect to the inferior bone in each motion segment from C2-C3 to C6-C7.…”

Section: Discussionsupporting

confidence: 90%

Three-dimensional intervertebral kinematics in the healthy young adult cervical spine during dynamic functional loading

Anderst

Donaldson

Lee

et al. 2015

Journal of Biomechanics

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 90%

Three-dimensional intervertebral kinematics in the healthy young adult cervical spine during dynamic functional loading

Anderst

Donaldson

Lee

et al. 2015

Journal of Biomechanics

View full text Add to dashboard Cite

“…Another study using the same subjects of this study showed C3/C4 and C4/C5 had greater the anterior-posterior (AP) movement (4.8mm, 4.8mm, respectively) than C5/C6 and C6/C7 (3.7mm, 2.4mm, respectively) during neck flexion-extension, but the superior-inferior (SI) movement of all segment levels was similar (1.7-1.8mm) [19]. During in vivo dynamic flexion-extension, the ICRs of all sub-axial cervical spinal segments were shown to locate anteriorly to the posterior edges of the vertebral bodies [20, 21]. Anderst et al [21] found that the range of the ICR motion in the SI direction was lower than that in AP direction, and the range of the ICR motion in the AP direction at C3/C4 and C4/C5 was greater than that at C5/C6 and C6/C7.…”

Section: Discussionmentioning

confidence: 99%

Dimensional changes of the neuroforamina in subaxial cervical spine during in vivo dynamic flexion-extension

Mao

Driscoll

et al. 2016

The Spine Journal

View full text Add to dashboard Cite

Background Context Neuroforaminal stenosis is one of the key factors causing clinical symptoms in patients with cervical radiculopathy. Previous quantitative studies on the neuroforaminal dimensions have focused on measurements in a static position. Little is known about dimensional changes of the neuroforamen in the cervical spine during functional dynamic neck motion under physiological loading conditions. Purpose To investigate the in vivo dimensional changes of the neuroforamen in human cervical spine (C3-C7) during dynamic flexion-extension neck motion. Study Design A case-control study. Methods 10 asymptomatic subjects were recruited for this study. The cervical spine of each subject underwent magnetic resonance image (MRI) scanning for construction of three dimensional (3D) vertebrae models from C3 to C7. The cervical spine was then imaged using a dual fluoroscopic system while the subject performed a dynamic flexion-extension neck motion in a sitting position. The 3D vertebral models and the fluoroscopic images were used to reproduce the in vivo vertebral motion. The dimensions (area, height and width) were measured for each cervical neuroforamen (C3/C4, C4/C5, C5/C6 and C6/C7) in the following functional positons: neutral positon, maximal flexion and maximal extension. Repeated measures ANOVA and post-hoc analysis were used to examine the differences between levels and positions. Results Compared with the neutral position, almost all dimensional parameters (area, height and width) of the sub-axial cervical neuroforamen decreased in extension and increased in flexion, except the neuroforaminal area at C5/C6 (P=0.07) and the neuroforaminal height at C6/C7 (P=0.05) remained relatively constant from neutral to extension. When comparisons of the overall change from extension to flexion were made between segments, the overall changes of the neuroforaminal area and height revealed no significant differences between segments, the width overall change of the upper levels (C3/C4 and C4/C5) was significantly greater than the lower levels (C5/C6 and C6/C7) (P<0.01). Conclusions The dimensional changes of the cervical neuroforamen showed segment-dependent characteristics during the dynamic flexion-extension. These data may have implications for diagnosis and treatment of patients with cervical radiculopathy.

show abstract

“…7,12 A pre vious study by our team has shown the relation between the instantaneous center of rotation and cervical disc de generation in asymptomatic subjects. 14 In this study, we performed radiographic studies of the cervical spines of 212 asymptomatic volunteers and demonstrated the effect of disc degeneration on segmental ROM, based on a scor ing system for cervical disc degeneration, 25 which can be used to assess the degree of cervical disc degeneration for 3 independent variables.…”

mentioning

confidence: 99%

Are the standard parameters of cervical spine alignment and range of motion related to age, sex, and cervical disc degeneration?

Liu

Hoof³

et al. 2015

SPI

Self Cite

View full text Add to dashboard Cite

OBJECT The aims of this study were 1) to establish the standard parameters of alignment and total and segmental range of motion (ROM) of the cervical spine in the asymptomatic population, and 2) to identify factors that influence cervical ROM and alignment. METHODS The authors measured 636 standard cervical lateral, flexion, and extension plain radiographs of 212 asymptomatic volunteers. The relationship between cervical alignment and total ROM was assessed with simple linear regression. Multivariate linear regression was used to determine the effect of the influential factors on cervical alignment and total and segmental ROM. RESULTS The mean value for C2–7 cervical alignment was 21.40° ± 12.15°, and the mean value for total ROM was 63.59° ± 15.37°. Sex was a significant factor in cervical alignment, total ROM, and segmental ROM for C2–3 and C5–6 (p < 0.05). Age had a significant negative association with both the total ROM and all of the segmental ROM measurements (p < 0.05). Cervical disc degeneration at the level of interest had a significant negative association with C4–5, C5–6, and C6–7 ROM (p < 0.05). CONCLUSIONS Cervical alignment in female subjects was 2.47° lower than that in male subjects. Total ROM was 3.86° greater in female than in male subjects and decreased 6.46° for each decade of aging. Segmental ROM decreased 1.28° for each decade of aging and 2.26° for each category increase in disc degeneration at the level of interest.

show abstract

Kinematic study of the relation between the instantaneous center of rotation and degenerative changes in the cervical intervertebral disc

Cited by 40 publications

References 21 publications

Three-dimensional intervertebral kinematics in the healthy young adult cervical spine during dynamic functional loading

Three-dimensional intervertebral kinematics in the healthy young adult cervical spine during dynamic functional loading

Dimensional changes of the neuroforamina in subaxial cervical spine during in vivo dynamic flexion-extension

Are the standard parameters of cervical spine alignment and range of motion related to age, sex, and cervical disc degeneration?

Contact Info

Product

Resources

About