Low back pain (LBP) is a widespread and serious health issue affecting a significant portion of the global population. It is widely recognized as the leading cause of disability in high-income countries (HICs) and developed countries. Despite its prevalence, research on LBP in sub-Saharan Africa remains limited.
Studies suggest a correlation between LBP and pelvic angle, with African residents often exhibiting a high pelvic tilt. Understanding the condition of LBP and its impact on people's lifestyles in regions like Tanzania is crucial for guiding treatments such as physiotherapy and reducing the incidence of LBP among adults. Therefore, it is important to understand the condition of LBP and how it affects people’s lifestyle in Tanzania in order to guide treatments, such as physiotherapy, and reduce the incidence of LBP among adults.
This article explores the prevalence, causes, and treatment of lumbar lordosis, with a particular focus on African Americans.
Understanding Lumbar Lordosis
Lumbar lordosis refers to the inward curvature of the lower back. While a certain degree of lordosis is normal and necessary for balance and shock absorption, excessive curvature can lead to pain and discomfort. Normally, the spine is known to have lordotic curves in the cervical and lumbar regions and a kyphotic curve in the thoracic region.
A malalignment in the sagittal plane is presented as an exaggeration or deficiency of normal lordosis or kyphosis. Pain and deformity result by imbalance and loss of equilibrium between these structures by pathological processes.
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The degrees and shape of these curvatures allow an equal distribution of forces across the spinal column. This malalignment is usually accompanied by pain and functional disability. As a result, the pelvic and lower limb posture compensate for the imbalance to restore normal alignment.
Prevalence Among African Americans
Several authors have hypothesized that there is a link between lumbar lordosis and low back pain. The purposes of this study were to investigate differences in lumbar lordosis in black and white adult females and to explain the clinical impression that blacks have a greater lordosis than whites.
An actual lumbosacral lordosis angle (ALS) was measured from a standing right lateral lumbosacral radiograph using the angle formed from the intersection of lines drawn across the top of the second lumbar vertebral body (L2) and across the top of the sacrum.
To determine whether gluteal prominence gives a false impression of increased lumbar lordosis, an apparent lordosis (APL) measurement was taken, measuring the distance from the subject's greater trochanter to the most posterior aspect of the buttocks.
Significant differences were found between black and white APL, with blacks demonstrating a larger APL than whites (P less than 0.01). No significant differences were found in ALS or ALL between 25 black and 27 white adult female subjects (ALS, P = 0.26; ALL, P = 0.41).
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These relationships have not been previously described in a sample consisting exclusively of elderly, African-American women. A total of 475 African-American women enrolled in the multicenter Study of Osteoporotic Fractures participated in this ancillary, cross-sectional, study of lumbar lordosis. These women received lumbar spine radiographs and completed a questionnaire on low back pain and its impact on their daily lives. Lumbar lordosis tertiles were created based on radiographic measurements. Comparisons were made between the tertiles for differences in radiologic and clinical variables.
Significant differences (p < 0.0025) were observed between the lordosis tertiles and the presence of spondylolisthesis, intervertebral disc space, and vertebral wedging. The degree of lumbar lordosis was associated with radiologic variables but was not associated with symptoms or decreased function from low back pain. No significant differences were observed between the lordosis tertiles for the occurrence of low back pain, symptoms associated with low back pain, and disability experienced from low back pain.
While there is a clinical impression that African Americans may have a greater lordosis than whites, research suggests that differences might be related to gluteal prominence rather than actual spinal curvature.
How to Fix Anterior Pelvic Tilt: 20 Min Hyperlordosis Correction Exercises
Causes of Lumbar Lordosis
Postural abnormalities may play a role in the occurrence of LBP by creating concentrations of stress. Several studies have reported the predictors of LBP, of which we site physical stress, psychological stress, personal characteristics and physical characteristics as predictors of LBP.
Several factors can contribute to lumbar lordosis, including:
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- Genetics: Some individuals may be predisposed to lordosis due to inherited spinal structure.
- Poor Posture: Prolonged sitting, standing, or sleeping in incorrect positions can exacerbate lordosis.
- Obesity: Excess weight, particularly around the abdomen, can pull the pelvis forward, increasing lumbar curvature. From the BMI results in Table 1, the group with LBP has a significantly higher obesity rate.
- Muscle Imbalances: Weak abdominal muscles and tight hip flexors can contribute to an anterior pelvic tilt and increased lordosis.
- Spinal Conditions: Conditions such as spondylolisthesis (slipping of one vertebra over another) and discitis (inflammation of the intervertebral discs) can lead to lordosis.
Symptoms and Diagnosis
Symptoms of lumbar lordosis can vary depending on the severity of the curvature. Common symptoms include:
- Lower back pain
- Muscle stiffness
- Difficulty with movement
- Visible arch in the lower back
Diagnosis typically involves a physical examination, assessment of posture, and imaging tests such as X-rays to measure the degree of spinal curvature. The subjects’ spines were traced using spinal mouse from C7 to S3. The angle of LL was the angle from Th12/L1 to L5/S1 and these angles were calculated automatically.
Treatment Options
The principles of sagittal balance are vital to achieve optimum outcomes when treating spinal disorders, since a failure to recognize malalignment in this plane can have significant consequences for the patient in terms of pain and deformity. The impact of sagittal vertebral alignment on the treatment of spinal disorders is of critical importance.
Treatment for lumbar lordosis aims to alleviate pain, improve posture, and strengthen supporting muscles. Common treatment approaches include:
- Physical Therapy: Exercises to strengthen abdominal and back muscles, improve flexibility, and correct posture. Several reports recommend muscle strength training of core muscles including the abdominal muscles aiming to improve hyperlordosis of the lumbar segment to prevent LBP.
- Pain Management: Over-the-counter or prescription pain relievers to reduce discomfort.
- Weight Management: Losing weight to reduce stress on the spine.
- Bracing: In some cases, a brace may be recommended to support the spine and correct curvature, particularly in children and adolescents.
- Surgery: Rarely necessary, surgery may be considered in severe cases where other treatments have failed.
Considering the results of the present study, this approach to improve trunk muscle strength is not enough to ameliorate LBP. Accordingly, for those who have LBP with lumbar hyperlordosis, correcting muscle flexibility and strength on abdominal and hip joint is necessary to improve anterior pelvic tilt.
Anterior and posterior pelvic muscles cause a disrupted pelvic angle when they are imbalanced. This imbalance is expressed by an anterior tilt of the pelvis by the quadriceps muscles and iliopsoas muscles, while the posterior tilt is caused by the hamstrings muscle pulling posteriorly.
Table 1: Physical Characteristics of Participants
| Characteristic | Asymptomatic Group (n=52) | Symptomatic Group (n=16) |
|---|---|---|
| Age (years) | 20-45 | 20-55 |
| Pelvic Angle | Lower | Higher |
| BMI | Lower | Higher |
| Thoracic Kyphosis Angle | Lower | Higher |
Additional Considerations
The study in Tanzania found significant differences in pelvic angle and thoracic kyphosis angle between symptomatic and asymptomatic groups. A person with symptomatic LBP in Tanzania has a large anteversion of the pelvic tilt and a thoracic kyphotic posture. This suggests that interventions targeting pelvic alignment and thoracic posture may be beneficial in managing LBP in this population.
Excessive thoracic kyphosis is also associated with LBP. Thoracic kyphosis contributes to positioning the center of gravity of the body behind. It is thought that when there is a thoracic kyphosis, the burden increases on the waist as a motion strategy is taken to ensure postural stability.
Therefore, evaluation such as the flexibility and stability that contribute to kyphosis of the thoracic vertebrae are indispensable for exploring the causes of people with LBP in Tanzania.
In developing regions like Tanzania, where diagnostic imaging and enough research are lacking, it is important to understand the morphological features to reduce the risk of many local populations’ musculoskeletal problems, to give an efficient treatment program and to promote the concept of prevention.
Conclusion
While lumbar lordosis can affect individuals of all races and ethnicities, understanding its causes, symptoms, and treatment options is essential for effective management. For African Americans, addressing factors such as posture, weight, and muscle imbalances can help alleviate pain and improve spinal health.
