The influence of initial resting posture on range of motion of the lumbar spine

2001 ◽  
Vol 6 (3) ◽  
pp. 139-144 ◽  
Author(s):  
J.E. Coates ◽  
A.H. McGregor ◽  
I.D. Beith ◽  
S.P.F. Hughes
Keyword(s):  
Lumbar Spine ◽  
Range Of Motion

Impairment Tutorial: Recurrent Radioculpathy: Recurrent Radioculpathy and Apportionment

2002 ◽  
Vol 7 (4) ◽  
pp. 8-10
Author(s):  
Christopher R. Brigham ◽  
Leon H. Ensalada
Keyword(s):  
Lumbar Spine ◽  
Range Of Motion ◽  
Disk Herniation ◽  
Fourth Edition ◽  
Recurrent Injury ◽  
Injury Model ◽  
Whole Person ◽  
Spinal Region

Abstract Recurrent radiculopathy is evaluated by a different approach in the AMA Guides to the Evaluation of Permanent Impairment (AMA Guides), Fifth Edition, compared to that in the Fourth Edition. The AMA Guides, Fifth Edition, specifies several occasions on which the range-of-motion (ROM), not the Diagnosis-related estimates (DRE) method, is used to rate spinal impairments. For example, the AMA Guides, Fifth Edition, clarifies that ROM is used only for radiculopathy caused by a recurrent injury, including when there is new (recurrent) disk herniation or a recurrent injury in the same spinal region. In the AMA Guides, Fourth Edition, radiculopathy was rated using the Injury Model, which is termed the DRE method in the Fifth Edition. Also, in the Fourth Edition, for the lumbar spine all radiculopathies resulted in the same impairment (10% whole person permanent impairment), based on that edition's philosophy that radiculopathy is not quantifiable and, once present, is permanent. A rating of recurrent radiculopathy suggests the presence of a previous impairment rating and may require apportionment, which is the process of allocating causation among two or more factors that caused or significantly contributed to an injury and resulting impairment. A case example shows the divergent results following evaluation using the Injury Model (Fourth Edition) and the ROM Method (Fifth Edition) and concludes that revisions to the latter for rating permanent impairments of the spine often will lead to different results compared to using the Fourth Edition.

scholarly journals A Scoring System for Anterior Longitudinal Ligament Ossification of the Lumbar Spine in Diffuse Idiopathic Skeletal Hyperostosis: Relationship Between the Extent of Ligament Ossification and the Range of Motion

2021 ◽  
pp. 219256822199668
Author(s):  
Yusuke Murakami ◽  
Tadao Morino ◽  
Masayuki Hino ◽  
Hiroshi Misaki ◽  
Hiroshi Imai ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Intervertebral Disc ◽  
Range Of Motion ◽  
Scoring System ◽  
Diffuse Idiopathic Skeletal Hyperostosis ◽  
Disc Height ◽  
Rater Reliability ◽  
Canal Stenosis ◽  
Intervertebral Disc Height ◽  
The Relationship

Study Design: Retrospective observational study. Objective: To investigate the relationship between the extent of ligament ossification and the range of motion (ROM) of the lumbar spine and develop a new scoring system. Methods: Forty-three patients (30 men and 13 women) with lumbar spinal canal stenosis who underwent decompression from January to December 2018. Ligament ossification at L1/2 to L5/S was assessed on plain X-ray (Xp) and computed tomography (CT) using a modified Mata scoring system (0 point: no ossification, 1 point: ossification of less than half of the intervertebral disc height, 2 points: ossification of half or more of the intervertebral disc height, 3 points: complete bridging), and the intra-rater and inter-rater reliability of the scoring was assessed. The relationship of the scores with postoperative lumbar ROM was investigated. Result: Intra-rater reliability was high (Cronbach’s α was 0.74 for L5/S on Xp but 0.8 or above for other sections), as was inter-rater reliability (Cronbach’s α was 0.8 or above for all the segments). ROM significantly decreased as the score increased (scores 1 to 2, and 2 to 3). A significant moderate negative correlation was found between the sum of the scores at L1/2-L5/S and the ROM at L1-S (ρ = − 0.4493, P = 0.025). Conclusion: Our scoring system reflects lumbar mobility and is reproducible. It is effective for assessing DISH in fractures and spinal conditions, and monitoring effects on treatment outcomes and changes over time.

Design and development of a novel expanding flexible rod device (FRD) for stability in the lumbar spine: A finite-element study

2020 ◽  
Vol 43 (12) ◽  
pp. 803-810 ◽  
Author(s):  
Masud Rana ◽  
Sandipan Roy ◽  
Palash Biswas ◽  
Shishir Kumar Biswas ◽  
Jayanta Kumar Biswas
Keyword(s):  
Finite Element ◽  
Lumbar Spine ◽  
Range Of Motion ◽  
Pedicle Screw ◽  
Axial Rotation ◽  
Von Mises Stress ◽  
Lateral Bending ◽  
Intact Bone ◽  
Flexion Extension ◽  
Von Mises

The aim of this study is to design a novel expanding flexible rod device, for pedicle screw fixation to provide dynamic stability, based on strength and flexibility. Three-dimensional finite-element models of lumbar spine (L1-S) with flexible rod device on L3-L4-L5 levels are developed. The implant material is taken to be Ti-6Al-4V. The models are simulated under different boundary conditions, and the results are compared with intact model. In natural model, total range of motion under 10 Nm moment were found 66.7°, 24.3° and 13.59°, respectively during flexion–extension, lateral bending and axial rotation. The von Mises stress at intact bone was 4 ± 2 MPa and at bone, adjacent to the screw in the implanted bone, was 6 ± 3 MPa. The von Mises stress of disc of intact bone varied from 0.36 to 2.13 MPa while that of the disc between the fixed vertebra of the fixation model reduced by approximately 10% for flexion and 25% for extension compared to intact model. The von Mises stresses of pedicle screw were 120, 135, 110 and 90 MPa during flexion, extension, lateral bending, and axial rotation, respectively. All the stress values were within the safe limit of the material. Using the flexible rod device, flexibility was significantly increased in flexion/extension but not in axial rotation and lateral bending. The results suggest that dynamic stabilization system with respect to fusion is more effective for homogenizing the range of motion of the spine.

Comparison of porcine and human lumbar spine flexion mechanics*

2003 ◽  
Vol 16 (01) ◽  
pp. 44-49 ◽  
Author(s):  
G. A. Dumas ◽  
D. A. Bednar ◽  
J. P. Dickey
Keyword(s):  
Lumbar Spine ◽  
Range Of Motion ◽  
Mechanical Tests ◽  
Neutral Position ◽  
Spinal Fixation ◽  
Potential Health ◽  
Human Lumbar Spine ◽  
Pure Moment ◽  
Low Stiffness

SummaryAnimal models have been proposed as an alternative to human spinal specimens for in vitro mechanical testing due to the limited availability, poor reproducibility, high cost, and potential health risk associated with human specimens. The purpose of this study was to directly compare the flexion biomechanics of porcine and human lumbar spines. We determined the range of motion, laxity zone and the stiffness under pure-moment flexion loading. The porcine and human specimens showed qualitative similarities in mechanical behaviour. However the porcine specimens demonstrated a number of quantitative differences including a less-stiff, more extensive, low-stiffness region around the neutral position and a larger flexion range of motion. The results suggest that the porcine lumbar spine may be a potential model for the human lumbar spine for certain in vitro mechanical tests including comparisons between spinal fixation constructs.

Novel 3-Dimensional Motion Analysis Method for Measuring the Lumbar Spine Range of Motion

Spine ◽  
2013 ◽  
Vol 38 (21) ◽  
pp. E1327-E1333 ◽  
Author(s):  
Michio Tojima ◽  
Naoshi Ogata ◽  
Arito Yozu ◽  
Masahiko Sumitani ◽  
Nobuhiko Haga
Keyword(s):  
Lumbar Spine ◽  
Range Of Motion ◽  
Motion Analysis ◽  
Analysis Method ◽  
3 Dimensional

scholarly journals Reliability of a Measure of Total Lumbar Spine Range of Motion in Individuals with Low Back Pain

2013 ◽  
Vol 29 (6) ◽  
pp. 670-677 ◽  
Author(s):  
Fadi M. Al Zoubi ◽  
Richard A. Preuss
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Lumbar Spine ◽  
Range Of Motion ◽  
Generalizability Theory ◽  
Minimal Detectable Change ◽  
Low Back ◽  
Single Measure ◽  
Spline Fitting ◽  
Center Position

Measuring lumbar spine range of motion (ROM) using multiple movements is impractical for clinical research, because finding statistically significant effects requires a large proportion of subjects to present with the same impairment. The purpose of this study was to develop a single measure representing the total available lumbar ROM. Twenty participants with low back pain performed three series of eight lumbar spine movements, in each of two sessions. For each series, an ellipse and a cubic spline were fit to the end-range positions, measured based on the position of the twelfth thoracic vertebra in the transverse plane of the sacrum. The area of each shape provides a measure of the total available ROM, whereas their center reflects the movements’ symmetry. Using generalizability theory, the index of dependability for the area and anterior-posterior center position was found to be 0.90, but was slightly lower for the mediolateral center position. Slightly better values were achieved using the spline-fitting approach. Further analysis also indicated that excellent reliability, and acceptable minimal detectable change values, would be achieved with a single testing session. These data indicate that the proposed measure provides a reliable and easily interpretable measure of total lumbar spine ROM.

Range of Motion in the Lumbar Spine and the Effects of Age and Gender

Physiotherapy ◽  
2000 ◽  
Vol 86 (1) ◽  
pp. 42 ◽  
Author(s):  
G Van Herp ◽  
PJ Rowe ◽  
PM Salter
Keyword(s):  
Lumbar Spine ◽  
Range Of Motion ◽  
Age And Gender ◽  
And Gender

Distribution of Schmorl Nodes in the Lumbar Spine and Their Relationship With Lumbar Disk Degeneration and Range of Motion

Spine ◽  
2015 ◽  
Vol 40 (1) ◽  
pp. E49-E53 ◽  
Author(s):  
Ruofeng Yin ◽  
Elizabeth L. Lord ◽  
Jeremiah Raphael Cohen ◽  
Zorica Buser ◽  
Lifeng Lao ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Range Of Motion ◽  
Lumbar Disk ◽  
Disk Degeneration ◽  
Lumbar Disk Degeneration

scholarly journals RSA in Spine: A Review

2017 ◽  
Vol 7 (8) ◽  
pp. 811-820 ◽  
Author(s):  
Ali Humadi ◽  
Sulaf Dawood ◽  
Klas Halldin ◽  
Brian Freeman
Keyword(s):  
Systematic Review ◽  
Lumbar Spine ◽  
Range Of Motion ◽  
Rigid Bodies ◽  
Review Of Literature ◽  
Radiostereometric Analysis ◽  
Specific Knowledge ◽  
Spinal Motion ◽  
Vertebral Segment

Study Design: Systematic review of literature. Objectives: This systematic review was conducted to investigate the accuracy of radiostereometric analysis (RSA), its assessment of spinal motion and disorders, and to investigate the limitations of this technique in spine assessment. Methods: Systematic review in all current literature to invesigate the role of RSA in spine. Results: The results of this review concluded that RSA is a very powerful tool to detect small changes between 2 rigid bodies such as a vertebral segment. The technique is described for animal and human studies for cervical and lumbar spine and can be used to analyze range of motion, inducible displacement, and fusion of segments. However, there are a few disadvantages with the technique; RSA percutaneous procedure needs to be performed to implant the markers (and cannot be used preoperatively), one needs a specific knowledge to handle data and interpret the results, and is relatively time consuming and expensive. Conclusions: RSA should be looked at as a very powerful research instrument and there are many questions suitable for RSA studies.

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