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Ankylosing spondylitis is an inflammatory autoimmune disorder that causes arthritis of the spine. It is characterised by pain, stiffness, and inflammation in the spine and other joints of the body. Over time, ankylosing spondylitis can lead to a loss of flexibility in the spine and the development of a hunched posture. While the exact cause of ankylosing spondylitis is unknown, it is believed to be influenced by both genetic and environmental factors. The disease is associated with muscle weakness and early muscle loss, and physical therapy and exercise play a crucial role in managing the condition and improving muscle strength.
| Characteristics | Values |
|---|---|
| Common name | Ankylosing spondylitis (AS) |
| Type of arthritis | Axial spondyloarthritis |
| Cause | Unknown, but studies show that both genes and environment may lead to the development of the disease |
| Symptoms | Pain, stiffness, and inflammation in the spine, back, hips, ribs, shoulders, knees, ankles, feet, neck, and eyes |
| Complications | Uveitis, heart problems, compression fractures, loss of appetite, weight loss, fatigue, anemia, lung disorders, dactylitis, and muscle weakness |
| Muscle weakness characteristics | Reduced muscle strength in the upper and lower limbs, imbalance between trunk flexors and extensors, sarcopenia (progressive decline in muscle mass and strength) |
| Treatment | Physiotherapy, hydrotherapy, aquatic therapy, exercise, muscle relaxants, opioid analgesics, corticosteroid injections, and surgery |
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What You'll Learn
Muscle wasting and sarcopenia
Ankylosing spondylitis (AS) is an inflammatory autoimmune disorder that affects the spine, causing pain and stiffness. This condition can lead to a reduced quality of life and physical disability due to the impairment it causes.
AS patients experience muscle weakness, particularly in the trunk flexor and extensor muscles, which can impact their posture and balance. Research has shown that AS patients have reduced muscle strength compared to healthy individuals, and this weakness is more profound in the extensor muscles than the flexor muscles.
The term sarcopenia refers to a progressive decline in muscle mass and strength, often associated with aging. However, sarcopenia can also occur due to chronic diseases, low protein intake, or physical inactivity. AS patients are at risk of developing sarcopenia at a younger age due to the inflammatory nature of the disease, which can lead to faster muscle wasting.
Several studies have found evidence of sarcopenia in AS patients. A French study found sarcopenia in 21% of axial spondyloarthritis patients, while a Thai study reported a prevalence of 85.6% in AS patients. These findings suggest that sarcopenia is a real concern for individuals with AS, and early interventions to promote muscle health are recommended.
The development of sarcopenia in AS patients is influenced by various factors, including inflammation, reduced physical activity, sedentary lifestyle, and neuromuscular impairment. Elevated inflammation can compromise muscle performance and further reduce the patient's physical activity levels, creating a cycle that contributes to the overall burden of the disease.
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Rehabilitation and exercise
Benefits of Exercise for AS Patients
Exercise plays a pivotal role in counteracting the impacts of AS and other forms of spondyloarthritis. It helps maintain and improve mobility, flexibility, strength, endurance, balance, and overall physical function. For AS patients specifically, regular exercise can improve posture, stiffness, pain, fatigue, and breathing capacity.
Multiple studies have found that exercise programs for AS patients can lead to a slight improvement in physical function and a reduction in pain. While the evidence for spinal mobility and fatigue improvements is uncertain, exercise remains crucial for overall health.
Range of Motion and Stretching Exercises
Range of motion and stretching exercises are critical for AS patients. Due to the pain, swelling, and stiffness associated with AS, individuals tend to limit their movement, which can lead to further loss of mobility and an increased risk of joint fusion. Range of motion exercises help improve flexibility, reduce stiffness, swelling, and pain, and minimize the risk of fusion. These exercises are typically done without weights, focusing on moving the muscles and joints through their full range of motion.
Specific Exercises for AS
- Deep-breathing exercises: Take deep breaths several times a day to help prevent respiratory issues associated with AS.
- Back stretch: Lie on your stomach and slowly prop yourself up on your elbows, straightening your arms if possible. Hold for 10-20 seconds and repeat several times to stretch and strengthen the back.
- Wall slide: Stand with your back against a wall and slowly slide down until your thighs are parallel to the floor. Hold this position for a few seconds and repeat to strengthen your legs and improve posture.
- Plank: Kneel on a mat and push your legs out behind you, balancing on your toes while squeezing your stomach and buttocks muscles to hold your body in a straight line. Keep your neck in line with your spine and hold for several seconds.
- Leg lift: Hold onto a chair or railing, keep your back straight, and slowly lift one leg out to the side a few inches off the ground. This exercise helps strengthen the legs and improve balance.
Physical Therapy and Individualized Programs
The input of a physical therapist is invaluable for AS patients. They can help craft individualized stretching and strengthening programs tailored to the specific needs and limitations of each patient. Working with a professional can ensure that exercises are performed correctly and safely.
Overall Recommendations
While exercise is essential, it is also crucial to manage pain, inflammation, and stiffness through appropriate medical treatments. This management will enable AS patients to maintain a healthy exercise program. Additionally, early interventions are vital to prevent or slow muscle loss associated with AS, so starting rehabilitation and exercise programs early is beneficial.
In summary, rehabilitation and exercise are key components of managing AS. They help improve physical function, reduce pain, and enhance overall quality of life for individuals living with this challenging condition.
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Ankylosing spondylitis diagnosis
Ankylosing spondylitis (AS) is a type of axial spondyloarthritis that causes inflammation of the sacroiliac joints. It can be difficult to diagnose because the condition develops slowly and there is no definitive test.
If you suspect you have AS, the first step is to see your primary healthcare provider or GP, who will ask about your symptoms and medical history. They may then refer you to a rheumatologist, a specialist in inflammatory disorders or conditions affecting muscles and joints.
Your rheumatologist will likely perform imaging tests, such as X-rays and magnetic resonance imaging (MRI) scans, to examine the appearance of your spine, pelvis, and other joints. X-rays can reveal changes in joints and bones, although visible signs of AS might not be evident in the early stages of the disease. MRI scans can detect inflammation earlier but are more expensive.
Blood tests can also be used to check for markers of inflammation and the HLA-B27 gene, which is present in most people with AS. However, many people with the gene don't develop AS, and some people with AS don't have the gene. Therefore, blood tests alone cannot confirm a diagnosis.
In summary, diagnosing AS typically involves a combination of patient history, physical examination, imaging studies, and laboratory tests. It may take years to confirm a diagnosis, and a multidisciplinary team of healthcare professionals may be involved in the process.
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Symptoms and pain management
Ankylosing spondylitis (AS) is an inflammatory autoimmune disorder that causes arthritis of the spine, resulting in pain, redness, heat, swelling, and stiffness in the lower back and hips. The disease can also affect peripheral joints such as the knees, ankles, and hips. Over time, the inflammation may cause vertebrae in the spine to fuse, leading to a rigid and inflexible spine, and a hunched posture.
The most common symptoms of AS include lower back and/or hip pain and stiffness, which typically worsens during periods of rest or inactivity. The pain and stiffness may also affect other areas of the spine and body, including the ribs, shoulders, knees, and feet. Some people experience mild episodes of pain that come and go, while others suffer from chronic, severe pain.
AS can also cause muscle weakness and wasting, particularly in the trunk flexor and extensor muscles. This can lead to a loss of balance and stability. Additionally, AS may cause eye inflammation (uveitis), compression fractures due to weakened vertebrae, and heart problems related to inflammation of the aorta.
While there is no cure for AS, various treatments can help manage symptoms and slow the progression of the disease. These include:
- Nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen or naproxen sodium, which can relieve inflammation, pain, and stiffness.
- Tumor necrosis factor (TNF) blockers or anti-TNF medicines, which are recommended if NSAIDs and exercise do not provide sufficient relief. These work by reducing inflammation in the joints.
- Interleukin-17 (IL-17) inhibitors may be suggested if NSAIDs are not effective.
- Disease-modifying anti-rheumatic drugs (DMARDs) such as sulfasalazine and methotrexate are used to treat inflammation in joints other than the spine.
- Physiotherapy and exercise are key components of AS treatment, helping to improve posture, maintain flexibility, and manage pain. Group and individual exercise programs are recommended.
- Lifestyle choices such as staying active, quitting smoking, and practicing good posture can also help manage AS.
- In rare cases, joint replacement surgery may be necessary if joints, such as the hips, become severely damaged. Corrective spine surgery may also be required if the spine becomes badly bent.
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Ankylosing spondylitis causes
Ankylosing spondylitis (AS) is a type of arthritis that causes inflammation in the joints and ligaments of the spine. It may also affect peripheral joints like the knees, ankles, and hips. The inflammation associated with AS increases the risk of heart disease in general. It can also cause eye inflammation, called uveitis, which can lead to rapid-onset eye pain, sensitivity to light, and blurred vision.
AS is an inflammatory autoimmune disorder that often manifests with sacroiliitis in its early stages. In its later stages, AS can cause extensive inflammation in the lumbar, thoracic, and cervical spines. This inflammation can lead to spinal ankylosis, a "bamboo spine", kyphotic deformity, and an abnormal stooping posture. The unique structural changes in the spine, such as syndesmophyte formation and ankylosis, are the primary causes of early severe working disabilities and impaired health-related quality of life.
AS causes muscle wasting, and researchers have reported reduced muscle strength in the upper and lower limbs of patients with AS. A study published in European Geriatric Medicine found that individuals with AS may experience sarcopenia, a progressive decline in muscle mass and strength, at a relatively young age. This suggests that AS patients should begin early interventions, such as regular physical activity and strength training, to develop muscle tissue and promote healthier aging.
The trunk is considered a hydraulic stability system that requires coordinated muscle strength between flexors and extensors. Patients with AS may have relatively weak muscle strength compared to their healthy counterparts, and their imbalance between trunk flexors and extensors can be substantial. Additionally, patients with severe radiological stages of AS will likely experience a more profound loss of trunk muscle strength.
While there is no cure for AS, treatments can help lessen symptoms and slow the progression of the disease. Physiotherapy is an important part of treatment, as it can improve muscle strength and maintain mobility in the spine and other joints. Swimming is one of the best forms of exercise for AS patients, as it uses many muscles and joints without jarring them, and the water supports the body's weight.
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Frequently asked questions
Ankylosing spondylitis (AS) is a type of arthritis that causes inflammation in the joints and ligaments of the spine. It is an inflammatory autoimmune disorder that can cause bones in the spine to fuse, resulting in a loss of flexibility and a hunched posture.
The most common symptoms of AS include lower back and hip pain, stiffness, and fatigue. Other symptoms may include eye inflammation (uveitis), heart problems, and lung disorders. The disease can also affect peripheral joints such as the knees, ankles, and ribs.
Yes, ankylosing spondylitis can lead to muscle weakness and a decrease in muscle strength, especially in the trunk and limbs. This is due to the inflammation and joint damage caused by the disease, which can result in a less active lifestyle.
There is currently no cure for ankylosing spondylitis, but treatments can help manage symptoms and slow the progression of the disease. Treatments include physiotherapy, exercise, hydrotherapy, and in some cases, surgery or joint replacement.
The exact cause of ankylosing spondylitis is unknown, but it is believed to be a combination of genetic and environmental factors. The HLA-B27 gene increases the risk of developing AS, but it is not the sole determinant.
