Best Mattress for Ankylosing Spondylitis: A Guide to Firmness, Support & Sleep

Reviewed by Bethany Lawrence, Osteopath, Osteobeth

Living with a painful condition, your body wakes you before your alarm does. Before you even open your eyes, you can feel the stiffness through your back and hips — the kind of everyday pain that can come with ankylosing spondylitis, when getting out of bed is the hardest part of the day.

Your bed should be your sanctuary: a place to rest, recover and reset. But instead of waking up supported, you wake up sore — and you begin your day feeling frustrated, aching and tired. When you live with AS, the way your body is supported overnight can make a real difference to how you feel in the morning. In this guide, we'll walk through what to look for in a mattress — firmness, support, materials and sleeping position — so you can find the one that's right for you.

What is ankylosing spondylitis, and why does sleep matter?

Ankylosing spondylitis (AS) is a type of arthritis that causes inflammation of the spine and other joints, leading to stiffness and pain. "Ankylosing" means stiff or rigid joints, and "spondylitis" means inflammation of the spine. The symptoms of AS include back pain and stiffness, swelling from joint inflammation, and extreme tiredness. The pain is typically at its worst in the early morning and at night.

Sleep and AS

Sleep doesn't come easily to people with AS. A systematic review found that around 53% experience sleep disturbance, with some studies reporting figures as high as 80%. The relationship is bidirectional: poor sleep worsens pain and disease symptoms, and pain worsens sleep. Because AS pain and stiffness are so often present on waking, the support your mattress provides overnight is particularly important — the sleep surface directly affects how your spine is aligned through the night.

What mattress firmness is best for ankylosing spondylitis?

For those with AS, the ideal mattress firmness is medium-firm — around 6–7 on the firmness scale.

It shouldn't be too soft because excessive sink causes the spine to sag out of neutral alignment, worsening morning stiffness. But it shouldn't be too firm either, because that presses directly into inflamed joints and increases pressure-point pain. A medium-firm surface is the best balance for AS. In a review of 39 studies on back pain and mattress firmness, medium-firm came out as the best-supported choice.

Our orthopaedic expert, Bethany Lawrence, agrees:

A medium-firm mattress is generally considered the most suitable option for individuals with a spinal condition such as ankylosing spondylitis. It helps maintain neutral spinal alignment while reducing the lack of support and excessive sinking often associated with softer mattresses. This provides improved support, pressure relief, and more effective weight distribution during sleep.

By promoting proper spinal positioning, a medium-firm mattress can help minimise strain on the lower back and sacroiliac joints, which is particularly important given that morning stiffness is a common symptom of ankylosing spondylitis. Adequate mattress support also encourages healthier sleeping postures, such as side or back sleeping, while discouraging stomach sleeping, which can increase spinal stress and discomfort.

Why is a hybrid mattress often recommended for AS?

A hybrid mattress offers two types of relief for people with AS at once. The springs provide airflow, spinal alignment and edge-to-edge support (making it easier to get in and out of bed when you're stiff), while the foam contours to your sleeping position, cushioning the joints.

The hybrid layers offer zoned support — the strategically placed pocket springs work with your body and sleeping position to keep the spine aligned. Combined with the foam, they soothe pressure points and provide steady support for your back. The springs also isolate movement, so your partner getting up in the night is less likely to wake you.

Our Hybrid Bamboo Mattresses are both medium-firm and meet the support requirements described above. The Panda Hybrid Bamboo Mattress has a 6.5 rating on the firmness scale, and the Panda Hybrid Bamboo Mattress Pro is slightly firmer at 7. Our mattresses can't take away the pain and stiffness of AS, but the right support overnight may help you feel more comfortable and better rested — with orthopaedic-grade support that keeps your spine aligned.

What's the best sleeping position for ankylosing spondylitis?

It's generally best to sleep on your back if you have AS, with either a thin pillow or none at all. You can also sleep on your side, with a pillow between your knees — but stomach sleeping is best avoided, as it adds stress to your back. The aim is to keep your head, neck and spine aligned, rather than curled forward.

Many experts, including our orthopaedic expert Bethany Lawrence, recommend back sleeping for AS, and large pillows are often discouraged because they can push the neck forward and distort spinal alignment.

Your pillow should be low in height and, like your mattress, provide alignment that contours to your sleeping position. Our memory foam pillows use an orthopaedically informed design, and our pillow guides break down which ones suit different needs. The best pillow for AS is usually the thinnest supportive option that keeps your neck neutral — but if your physiotherapist has advised minimal pillows or a firmer set-up, follow their guidance. They can give more personalised advice based on your posture, spinal mobility, disease pattern and comfort limits.

If side sleeping is your preferred position, our guide on why a hybrid mattress suits side sleepers goes into more detail on getting the support right.

Temperature, inflammation and sleep — why cooling matters

Airflow and breathability are key to helping people with AS feel more comfortable through the night. When inflamed or irritated tissues get warmer, the nerves in that area become more easily triggered, so a rise in temperature can feel painful. People with AS may also be on medication such as TNF inhibitors, which can cause night sweats and temperature dysregulation.

Keeping the bed cool reduces overheating and minimises sleep disruption. Research on pain physiology shows that elevated tissue temperature lowers the pain threshold. This is where bamboo offers an advantage over memory foam alone: it's naturally breathable and thermoregulating, helping cool you down when you feel warm. Since memory foam can trap heat, bamboo-infused foam counteracts that and encourages airflow as you sleep.

What else should you look for in a mattress for AS?

Here's a checklist of what to look for in a mattress if you have ankylosing spondylitis:

• Medium-firm feel (6–7)
• Hybrid construction with zoned support
• Good pressure relief at the hips, shoulders and sacroiliac joints
• Temperature regulation
• Edge support (easier getting in and out of bed when stiff)
• A trial period (so you can test it properly at home)

Which Panda mattress is suitable for ankylosing spondylitis?

The table below compares our Hybrid Bamboo Mattress with our Hybrid Bamboo Mattress Pro, to help you see which might suit you better.

Conclusion

Finding the best mattress for ankylosing spondylitis is about more than comfort — it's about creating a sleep setup that supports your spine, reduces pressure, and helps you get the best possible rest. For many people with AS, a medium-firm hybrid mattress offers a helpful balance of neutral spinal alignment, pressure relief, and responsive support, while breathable materials help regulate temperature through the night.

A supportive mattress can play an important role in sleep quality and day-to-day comfort — but it's only one part of managing ankylosing spondylitis. Ongoing AS care should always be guided by your healthcare team, including your rheumatologist, GP or physiotherapist.

Explore our hybrid bamboo mattress range to find the level of support that feels right for you. And with a 100-night trial, you have time to properly test your mattress at home and see how it works for your body, sleep position, and condition.

FAQ

1. Is a firm or soft mattress better for ankylosing spondylitis?

Medium-firm is generally best for someone with ankylosing spondylitis. A sleep surface that's either too soft or too firm can worsen symptoms — too soft lets the spine sag, too firm presses into inflamed joints.

2. What firmness mattress is best for AS? 

A medium-firm mattress (around 6–7 out of 10). If a mattress is too firm, it adds pressure to the joints, which can cause more pain for someone with ankylosing spondylitis; too soft, and the spine loses alignment.

3. Is a hybrid or memory foam mattress better for ankylosing spondylitis?

A hybrid is generally better for AS because it combines the two types of support the condition needs: the spring layer provides spinal alignment, edge support, and airflow, while the foam contours and relieves pressure on inflamed joints.

4. What's the best sleeping position for AS?

If you have ankylosing spondylitis, it's generally best to sleep on your back with your head, neck, and spine aligned. Side sleeping with a pillow between the knees is also fine; sleeping on your stomach is best avoided.

5. Can a mattress help with ankylosing spondylitis pain?

A mattress isn't a cure for ankylosing spondylitis, but a supportive medium-firm hybrid may help ease discomfort and minimise the sleep disruption caused by pain and stiffness. It should be one part of a wider management plan guided by your healthcare team.

6. How often should someone with AS replace their mattress?

There are no AS-specific guidelines, but the general rule applies: replace your mattress every seven to ten years, or sooner if you notice sagging, dipping or softening.

7. Does a cooling mattress help with AS night pain?

It can help. Heat can intensify inflammatory pain by lowering the pain threshold, and a cooler sleep surface also helps with the night sweats that some AS medications cause — both of which can otherwise disrupt sleep.