In-Vivo Loads on the Lumbar Intervertebral Discs During Weight Lifting

Author(s):  
S. Wang ◽  
W. M. Park ◽  
J. Miao ◽  
K. Wood ◽  
Y. H. Kim ◽  
...  

The most common reason for occupational low back pain is the overload on the spine [1]. Determination of the load on the spine is critical for preventing low back pain, understanding injury mechanism and developing treatment techniques and surgical implants. However, due to the limitations in technology, only few in-vivo measurements were performed using pressure transducer [1] and telemeterized implants [2]. Because of the risks involved, neither of these techniques was suitable for a large healthy population. In this study, we proposed a new non-invasive technique and estimated the forces and moments on the lumbar intervertebral discs (IVDs) of three healthy subjects during a dynamic weight lifting activity.

Author(s):  
Tina M. Nagel ◽  
Victor H. Barocas ◽  
David J. Nuckley

Intervertebral disc (IVD) degeneration is hypothesized to be the precursor to non-specific low back pain, which is a widespread problem [1]. However, before disc degeneration can be understood, a better understanding of healthy discs must be gained. The disc is a short thick-walled cylinder with a gelatinous center, the nucleus pulposus, and a largely concentric, layered collagenous ring, the annulus fibrosus, Figure 1. The layers are referred to as lamella. The IVD is integral to the strength and flexibility of the spine. Whole disc mechanics have been widely studied, but degeneration occurs at the fiber level [2]. To understand the mechanics of degeneration, testing needs to be performed at a finer level where degenerative / injury effects occur. These effects such as tears occur in the annular lamella.


Spine ◽  
1980 ◽  
Vol 5 (2) ◽  
pp. 179-184 ◽  
Author(s):  
JEREMY C. T. FAIRBANK ◽  
JOHN PATRICK OʼBRIEN ◽  
PETER R. DAVIS

2018 ◽  
Vol 25 (6) ◽  
pp. 583-596 ◽  
Author(s):  
Michael Lukas Meier ◽  
Andrea Vrana ◽  
Petra Schweinhardt

Motor control, which relies on constant communication between motor and sensory systems, is crucial for spine posture, stability and movement. Adaptions of motor control occur in low back pain (LBP) while different motor adaption strategies exist across individuals, probably to reduce LBP and risk of injury. However, in some individuals with LBP, adapted motor control strategies might have long-term consequences, such as increased spinal loading that has been linked with degeneration of intervertebral discs and other tissues, potentially maintaining recurrent or chronic LBP. Factors contributing to motor control adaptations in LBP have been extensively studied on the motor output side, but less attention has been paid to changes in sensory input, specifically proprioception. Furthermore, motor cortex reorganization has been linked with chronic and recurrent LBP, but underlying factors are poorly understood. Here, we review current research on behavioral and neural effects of motor control adaptions in LBP. We conclude that back pain-induced disrupted or reduced proprioceptive signaling likely plays a pivotal role in driving long-term changes in the top-down control of the motor system via motor and sensory cortical reorganization. In the outlook of this review, we explore whether motor control adaptations are also important for other (musculoskeletal) pain conditions.


Author(s):  
Leonard H. Joseph, PhD ◽  
Benjamaporn Hancharoenkul, MSc, PT ◽  
Patraporn Sitilertpisan, PhD ◽  
Ubon Pirunsan, PhD ◽  
Aatit Paungmali, PhD

Background: Little is known about the effects of providing massage as a combination therapy (CT) with lumbopelvic stability training (LPST) in management of chronic nonspecific low back pain (CLBP) among elite female weight lifters. It is unclear whether massage therapy (MT) together with LPST has any additional clinical benefits for individuals with CLBP.Purpose: The current study compares the thera-peutic effects of CT against MT as a stand-alone intervention on pain intensity (PI), pain pressure threshold (PPT), tissue blood flow (TBF), and lumbopelvic stability (LPS) among elite weight lifters with CLBP.Setting: The study was conducted at the campus for National Olympic weight lifting training camp.Participants: A total of 16 professional female elite weight lifting athletes who were training for Olympic weight lifting competition participated in the study.Research Design: A within-subject, repeated measures, crossover, single-blinded, randomized allocation study.Intervention: The athletes were randomized into three sessions of CT and MT with a time interval of 24 hrs within sessions and a wash out period of four weeks between the sessions.Main Outcome Measures: The PI, PPT, TBF, and LPS were measured before and after each session repeatedly in both groups of intervention. The changes in the PI, PPT, TBF, and LPS were analyzed using repeated measures analysis of vari-ance (ANOVA).Results: The results showed that the CT signifi-cantly demonstrated greater effects in reducing pain perception (45%–51%), improving pain pressure threshold (15% up to 25%), and increas-ing tissue blood flow (131%–152%) than MT (p < .001).Conclusion: The combination therapy of mas-sage therapy and LPST is likely to provide more clinical benefits in terms of PI, PPT, and TBF when compared to massage as a stand-alone therapy among individuals with chronic nonspecific low back pain.


Author(s):  
J. S. An ◽  
A. A. Espinoza Orías ◽  
H. S. An ◽  
G. B. J. Andersson ◽  
N. Inoue

To accurately quantify the anatomic parameters of the lumbar spinal bony canal using a novel three-dimensional imaging technique based on in vivo CT three-dimensional models.


Ból ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 51-59
Author(s):  
Marcin Kopka

Low back pain (LBP) is the third most common disorder presenting in the neurology outpatient clinic. It is usually defined as acute (less than 4 weeks), subacute (4–8 weeks) and chronic (more than 12 weeks). It is estimated that lifetime prevalence of up to 84 %. LBP is the most common cause of disability. LBP is divided into musculoskeletal and neurologic low back pain. In 90% of patients under the age of 65 the cause of pain is nerve root compression caused by disk herniation. Although serious spinal pathology is rare (less than 1%), the identification of red flags remains key in the evaluation of patients with LBP. A prior history of cancer, even in the absence of other red flags, has the highest predictive value for detection of malignancy. In conjunction with the history, a careful neurologic examination can help establish the presence and localize the lesion. According to guidelines imaging studies should not be obtained in patients with LBP of less than 6 weeks duration in the absence of red flags. Magnetic resonance imaging is the study of choice in patients with LBP. It allows for optimal visualization of the spinal cord, nerve roots and intervertebral discs. The results of MRI should be interpreted with caution because incidental degenerative spine changes unrelated to the pain are commonly seen in MRI. The main goals of treatment the patients presenting with acute LBP are reduction of pain and preservation of sensory and motor function. In the absence of red flags, for most cases conservative management will be appropriate. Prognosis are favorable, although recurrence rates range from 23% to 80%.


2019 ◽  
Vol 6 (3) ◽  
pp. 79-82
Author(s):  
Afsoun Seddighi ◽  
Amir Saied Seddighi ◽  
Shiva Jamshidi ◽  
Hesam Rahimi Baghdashti

Pregnancy-related lumbopelvic pain has been a serious and common problem since ancient time. The present review article focuses on terminology, types, clinical presentation, and management of these problems. There are two entities regarding pregnancy-related lumbopelvic pain: pelvic girdle pain (PGP), and pregnancy-related low back pain (LBP). There are multiple mechanisms behind these disabilities. Age, multiparty, heavy weight lifting, hard physical activity, previous LBP, and low education increase the prevalence. About one-half of women with pregnancy-related lumbopelvic pain have PGP, one-third LBP, and one-sixth have both conditions. Overall, the literature reveals that PGP deserves serious attention from the clinical and economic standpoints.


Pain medicine ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 16-26
Author(s):  
V I Smolanka ◽  
V M Fedurtsya ◽  
B B Pavlov

Low back pain (LBP) is one of the most common causes of disability in the adult population. A significant place in its genesis is occupied by a degenerative-dystrophic diseases of intervertebral discs. The article highlights the classification and mechanism of discogenic pain origin. Various types of interventions aredescribed for this pathology: indications, specificities of carrying out manipulations and therapeutic effects, efficiency and possible complications of procedures.


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