Prevalence of Herniated Intervertebral Discs of the Cervical Spine in Asymptomatic Subjects Using MRI Scans

2006 ◽  
Vol 5 (1) ◽  
pp. 5-13
Author(s):  
Anthony D'Antoni
Keyword(s):  
Cervical Spine ◽  
Intervertebral Discs ◽  
Mri Scans ◽  
Asymptomatic Subjects

Predicting the Cross-sectional Areas of Low Back Intervertebral Discs: Archived Medical Record Versus MRI Scans from Asymptomatic Subjects

2020 ◽  
Vol 64 (1) ◽  
pp. 1451-1455
Author(s):  
Ruoliang Tang ◽  
Celal Gungor ◽  
Richard F. Sesek ◽  
Sean Gallagher ◽  
Gerard A. Davis ◽  
...  
Keyword(s):  
Medical Record ◽  
Regression Models ◽  
Model Development ◽  
Model Performance ◽  
Intervertebral Discs ◽  
Low Back ◽  
Cross Sectional ◽  
Biomechanical Models ◽  
Mri Scans ◽  
Asymptomatic Subjects

Evidence suggests that biomechanical models should consider the variations in spinal geometry, particularly the geometry of the intervertebral discs (IVDs), to investigate the mechanism and pathogenesis of low back pain (LBP). Regression models, as a non-invasive and indirect method, have been developed using anthropometric variables to estimate the size of the IVDs, with two major sources of geometric data, archived medical record (AMR) from hospital database and samples of subjects asymptomatic of LBP (ASY). Unfortunately, there is a lack of comparison of model performance and validity between the two approaches. The objective of this study was to compare the two approaches of model development. Results from this study may help determine whether it is feasible and plausible to apply AMR-derived regression models to estimate the geometry of the low back IVDs and help develop more personalized workplace ergonomic assessments in industry.

scholarly journals Lacrosse Equipment and Cervical Spinal Cord Space During Immobilization: Preliminary Analysis

2010 ◽  
Vol 45 (1) ◽  
pp. 39-43 ◽  
Author(s):  
Michael Higgins ◽  
Ryan T. Tierney ◽  
Jeffrey B. Driban ◽  
Steven Edell ◽  
Randall Watkins
Keyword(s):  
Spinal Cord ◽  
Cervical Spine ◽  
Repeated Measures ◽  
Cervical Spinal Cord ◽  
Spine Injury ◽  
Imaging Center ◽  
Mri Scans ◽  
History Of ◽  
Magnetic Resonance Imaging Mri ◽  
Cervical Spine Alignment

Abstract Context: Removal of the lacrosse helmet to achieve airway access has been discouraged based only on research in which cervical alignment was examined. No researchers have examined the effect of lacrosse equipment on the cervical space available for the spinal cord (SAC). Objective: To determine the effect of lacrosse equipment on the cervical SAC and cervical-thoracic angle (CTA) in the immobilized athlete. Design: Observational study. Setting: Outpatient imaging center. Patients or Other Participants: Ten volunteer lacrosse athletes (age  =  20.7 ± 1.87 years, height  =  180.3 ± 8.3 cm, mass  =  91 ± 12.8 kg) with no history of cervical spine injury or disease and no contraindications to magnetic resonance imaging (MRI). Intervention(s): The lacrosse players were positioned supine on a spine board for all test conditions. An MRI scan was completed for each condition. Main Outcome Measure(s): The independent variables were condition (no equipment, shoulder pads only [SP], and full gear that included helmet and shoulder pads [FG]), and cervical spine level (C3–C7). The dependent variables were the SAC and CTA. The MRI scans were evaluated midsagittally. The average of 3 measures was used as the criterion variable. The SAC data were analyzed using a 3 × 5 analysis of variance (ANOVA) with repeated measures. The CTA data were analyzed with a 1-way repeated-measures ANOVA. Results: We found no equipment × level interaction effect (F3.7,72  =  1.34, P  =  .279) or equipment main effect (F2,18  =  1.20, P  =  .325) for the SAC (no equipment  =  5.04 ± 1.44 mm, SP  =  4.69 ± 1.36 mm, FG  =  4.62 ± 1.38 mm). The CTA was greater (ie, more extension; critical P  =  .0167) during the SP (32.64° ± 3.9°) condition than during the no-equipment (25.34° ± 2.3°; t9  =  7.67, P  =  .001) or FG (26.81° ± 5.1°; t9  =  4.80, P  =  .001) condition. Conclusions: Immobilizing healthy lacrosse athletes with shoulder pads and no helmets affected cervical spine alignment but did not affect SAC. Further research is needed to determine and identify appropriate care of the lacrosse athlete with a spine injury.

scholarly journals Overview of Subaxial Cervical Spine Fractures and Dislocations

2021 ◽  
pp. 235-241
Author(s):  
AbdulWahab Ahmed Alzahrani ◽  
Mohammad Saeed M. Al Fehaid ◽  
Abdullah Saleh A. Alaboudi ◽  
Mohammed Ahmed Abed I. Abualsaoud ◽  
Faisal Abdulmohsen A. Bintalib ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Cervical Spine ◽  
Treatment Options ◽  
Axial Skeleton ◽  
Subaxial Cervical Spine ◽  
Cord Injury ◽  
Mri Scans ◽  
Magnetic Resonance Imaging Mri ◽  
Normal Shape ◽  
Cervical Spine Fractures

Injuries of the subaxial cervical spine are among the most common and potentially most devastating injuries involving the axial skeleton. The lower cervical spine can suffer minor bony or ligamentous injury that nevertheless results in severe neurologic injury. Plain radiography, computed tomography (CT) scans, and magnetic resonance imaging (MRI) scans are all part of the standard imaging regimen. The delayed timing of dislocation reduction and cost-effectiveness are two issues with routine use of MRI in the diagnosis of cervical facet dislocations. Serval treatment options and approaches can be used. However Orthopedic treatment can be used to reduce the fracture or dislocation returns the vertebral canal to its normal shape and dimensions and decompresses the spinal cord. Immediate treatment should be started if there are signs of spinal cord injury or any factor that could lead to such injuries. In this review we will be looking at epidemiology, causes, evaluation and treatment of such cases.

A novel method for measurement of occipital-cervical distance by occiput-C4 distance

2019 ◽  
Author(s):  
Chao Tang ◽  
Sheng Yang ◽  
Ye Hui Liao ◽  
Qiang Tang ◽  
Fei Ma ◽  
...  
Keyword(s):  
Cervical Spine ◽  
Standardized Testing ◽  
Normal Population ◽  
Normal Subjects ◽  
Basilar Invagination ◽  
Shortest Distance ◽  
Novel Method ◽  
Asymptomatic Subjects ◽  
Spine Radiographs ◽  
Flexion And Extension

Abstract Background: To describe and measure the occipital-cervical distance by a novel method utilizing the occiput-C4 distance (OC4D) in normal subjects that can be used to guide the restoration of vertical dislocation of the occipitocervical region in patients with basilar invagination and to perform standardized testing of occipitocervical constructs.Methods: Neutral, flexion, and extension lateral cervical spine radiographs of 150 asymptomatic subjects (73 males and 77 females) judged to be normal were analyzed. The mean age was 48.0±8.4 years old (range 20–69 years; 48.4±10.2 years old for males and 47.6±6.4 years old for females). Analysis consisted of measurement of the OC4D. The OC4D was defined as the shortest distance from the center of the C4 vertebral body to the McGregor’s line. Two spine surgeons measured the OC4D thrice in the normal population and obtained the average values. Height, weight, and body mass index (BMI) of each subject was recorded and analyze its correlation with OC4D.Results: The values of OC4D on neutral, flexion, and extension lateral cervical spine radiographs were 69.0±6.9 mm, 68.9±6.8 mm and 68.1±6.9 mm, respectively. There was no significantly different from the values measured in neutral、flexion and extension (P> 0.05). But the OC4D of males were higher than females in neutral, flexion, and extension (P < 0.001 for all). There was a positive correlation between OC4D and height and weight in neutral、flexion and extension (P <0.001 for all). The correlation between O-C4D and BMI was weak, and no significant in neutral, flexion, and extension (P > 0.05). The ICC values of inter- and intra-observer agreements for the radiographic parameter in all of the cervical positions were more than 0.93.Conclusions: OC4D, a new measurement method for occipital-cervical distance that is not affected by the change in neutral, flexion, and extension positions, should be a valuable parameter and intra-operative tool to guide the vertical restoration during OCF for patients with altered occiput-cervical anatomy.

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