MUSCULOSKELETAL SIMULATION OF THE RELATIONSHIP BETWEEN FOOT POSITION AND STRESS OF THE L4–L5 JOINT IN SUPPORTING STANDING-UP MOTION TO PREVENT LOW BACK PAIN AMONG CAREGIVERS

2019 ◽  
Vol 19 (02) ◽  
pp. 1940016 ◽  
Author(s):  
KODAI KITAGAWA ◽  
YOSHIKI NISHISAKO ◽  
TAKAYUKI NAGASAKI ◽  
SOTA NAKANO ◽  
CHIKAMUNE WADA
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Shear Stresses ◽  
Low Back ◽  
Musculoskeletal Simulation ◽  
Average Value ◽  
Standing Up ◽  
Foot Position ◽  
The Relationship ◽  
Lumbar Load

Most caregivers have low back pain which results from frequent care activities such as assistance motion that supports transfer and standing-up. Various parameters are associated with the caregiver’s lumbar load. In this study, we focus on the foot position of the caregiver as one of the subjective adjustable parameters. This study aimed to analyze the relationship between foot position and stresses of the L4–L5 joint as lumbar load during supporting standing-up via musculoskeletal simulation. The musculoskeletal model was tasked with simulating supported standing-up motions based on a specific pelvic position and angular variation of each joint. The anterior foot (left foot) was fixed, and the posterior foot (right foot) was moved to three backward positions and three rightward positions, thus obtaining nine posterior foot positions. Compressive, anteroposterior shear, and lateral shear stresses of the L4–L5 joint were compared for nine foot positions. The results showed that as the anteroposterior distance and lateral widths between both feet increased, the average value of compressive/shear stress of the L4–L5 joint during motions decreased. From our findings, we hypothesized that the foot position may reduce the lumbar load and prevent low back pain.

scholarly journals Regression Equation between Required Force and Lumbar Load of Caregiver in Supporting Standing-up Motion via Computational Musculoskeletal Simulation

2020 ◽  
Vol 28 (S2) ◽  
Author(s):  
Kodai Kitagawa ◽  
Yoshiki Nishisako ◽  
Takayuki Nagasaki ◽  
Sota Nakano ◽  
Mitsumasa Hida ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Regression Equation ◽  
Regression Equations ◽  
Low Back ◽  
Patient Handling ◽  
Musculoskeletal Simulation ◽  
Injury Threshold ◽  
Standing Up ◽  
Lumbar Load

Caregivers experience low back pain because of patient handling such as supporting standing-up. The lumbar load of a caregiver depends on the required force for patient handling motions. If the relationship between the required force and the lumbar load is quantitatively clarified, it may be useful for preventing low back pain in caregivers. In this study, we investigated the quantitative relationships between the required force and lumbar loads such as vertebral stress and muscle activity in supporting standing-up by computational musculoskeletal simulation. First, a musculoskeletal model of a caregiver was prepared, and then the model performed simulated supporting standing-up motions. The vertical load used as the required force was placed on the upper limb of the model. The compressive/shear stress of the vertebral (L4–L5) and muscle activities of spinae erector muscle group were recorded as the lumbar load. The results showed that there are highly significant correlations between the required force (r > 0.9, p < 0.01). In addition, regression equations for predicting each lumbar load by the required force with highly determination coefficients (R2 > 0.9) were obtained from these relationships. Furthermore, we found that when the required force was more than 120 N, the compression stresses of the vertebral exceeded injury threshold (3400 N) by the regression equation. These regression equations contribute to quantitatively consider lumbar loads of caregiver during patient handling based on injury thresholds and the required force.

Correction of Posture Deviations in the Sagittal Plane Using the Pilates Method

2019 ◽  
pp. 3-13
Author(s):  
Alexandru Cîtea ◽  
George-Sebastian Iacob
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Postural Control ◽  
Human Body ◽  
Sagittal Plane ◽  
The Body ◽  
Lower Limbs ◽  
Low Back ◽  
Pilates Method ◽  
The Relationship

Posture is commonly perceived as the relationship between the segments of the human body upright. Certain parts of the body such as the cephalic extremity, neck, torso, upper and lower limbs are involved in the final posture of the body. Musculoskeletal instabilities and reduced postural control lead to the installation of nonstructural posture deviations in all 3 anatomical planes. When we talk about the sagittal plane, it was concluded that there are 4 main types of posture deviation: hyperlordotic posture, kyphotic posture, rectitude and "sway-back" posture.Pilates method has become in the last decade a much more popular formof exercise used in rehabilitation. The Pilates method is frequently prescribed to people with low back pain due to their orientation on the stabilizing muscles of the pelvis. Pilates exercise is thus theorized to help reactivate the muscles and, by doingso, increases lumbar support, reduces pain, and improves body alignment.

scholarly journals The Relationship between Pelvic Tilt Angle and Disability Associated with Low Back Pain

2013 ◽  
Vol 25 (1) ◽  
pp. 65-68 ◽  
Author(s):  
Hee Sung Lim ◽  
Su Yeon Roh ◽  
Suk Min Lee
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Tilt Angle ◽  
Pelvic Tilt ◽  
Low Back ◽  
The Relationship

The Relationship Between Structural and Functional Brain Changes and Altered Emotion and Cognition in Chronic Low Back Pain Brain Changes

2018 ◽  
Vol 34 (3) ◽  
pp. 237-261 ◽  
Author(s):  
Sin Ki Ng ◽  
Donna M. Urquhart ◽  
Paul B. Fitzgerald ◽  
Flavia M. Cicuttini ◽  
Sultana M. Hussain ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Low Back ◽  
Functional Brain ◽  
Brain Changes ◽  
The Relationship

scholarly journals Quality of sleep in pregnant woman with low back pain

2015 ◽  
Vol 28 (2) ◽  
pp. 319-326 ◽  
Author(s):  
Vanessa Patrícia Soares de Sousa ◽  
Silvia Oliveira Ribeiro ◽  
Carla Monique Ribeiro de Aquino ◽  
Elizabel de Souza Ramalho Viana
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Sleep Quality ◽  
Pearson Correlation ◽  
Control Group ◽  
Low Back ◽  
Quality Of Sleep ◽  
Pressure Algometer ◽  
The Relationship

Introduction Pregnancy is characterized by several changes in her body. These changes contribute to the emergence of low back pain, which may influence the quality of sleep during pregnancy. Objective To compare the quality of sleep among pregnant women with and without low back pain during pregnancy, examining the relationship between two variables. Materials methods Thirty volunteers aged between 19 and 36 years, divided into control group (CG – n = 16) and Study Group (SG – n = 14), residents in the cities of Natal, were evaluated in the second trimester of pregnancy. To sleep evaluation were used to index the Pittsburgh Sleep Quality and the Epworth Sleepiness Scale. Low back pain was evaluated using the pressure algometer, Visual Analogue Scale (VAS) and Oswestry Disability Index. Statistical analysis used the Shapiro Wilk test, Student’s T test for independent samples and Pearson correlation test. Results The mean gestational and chronological ages were 28.2 ± 3.4 years and 19.9 ± 3.7 weeks, respectively. Sleep quality was lower in SG (8.21 ± 4.8) when compared to CG (5.94 ± 1.7) and was statistically significant (P = 0.021). Analyzing the relationship between sleep quality and pain intensity, it was observed that the variables have a positive correlation between them (r = 0.372, P = 0.043). Conclusion Our findings indicate that sleep quality is decreased in women with low back pain compared to those without pain.

The relationship between cigarette smoking and chronic low back pain

1991 ◽  
Vol 16 (3-4) ◽  
pp. 103-110 ◽  
Author(s):  
Robert N. Jamison ◽  
Barbara A. Stetson ◽  
Winston C.V. Parris
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Cigarette Smoking ◽  
Chronic Low Back Pain ◽  
Low Back ◽  
The Relationship

scholarly journals Reducing Lumbar Load with Active Corset

2018 ◽  
Vol 30 (5) ◽  
pp. 740-751 ◽  
Author(s):  
Michihiro Yoshida ◽  
Takayuki Tanaka ◽  
Yoshio Tsuchiya ◽  
Takashi Kusaka ◽  
◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Lumbar Spine ◽  
Mechanical Effect ◽  
Constant Force ◽  
Low Back ◽  
Bending Angle ◽  
Lumbar Load

This study describes the effect of Active Corset on the lumbar spine. Active Corset is assist tools used to prevent low back pain. It tightens the waist optimally according to the lumbar load during work. This study aimed to clarify the mechanical effect of tightening of the pelvis on lumbar joints and determine the mechanism leading to reduction of the lumbar load. Moreover, this study examined the phenomena commonly occurring among the subjects with reduced lumbar load by tightening of the pelvis. First, we will present some examples of currently used assist tools and demine the utility of the Active Corset among the various tools used. Next, the mechanism of the Active Corset will be described. Further, we will present a hypothesis about reducing the lumbar load by tightening the pelvis. After describing the change in the joint bending angle on tightening, we will describe reduction of burden from the antigravity torque around the lumbar joint. Finally, we will compare active tightening using Active Corset with tightening using a constant force and describe the advantage of active tightening.

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