What Is Hallux Rigidus, and Why Has My Big Toe Gone Stiff?
Hallux rigidus is arthritis of the big toe joint. The cartilage wears down and bony spurs form around the joint, making it stiff and painful, especially when you push off during walking. It is different from a bunion, which shifts the toe sideways. A standing weight-bearing x-ray shows the joint under real load and reveals how far the condition has progressed.
Key takeaways
- Hallux rigidus means the big toe joint has become arthritic and lost its ability to bend upward normally.
- It is not a bunion. A bunion pushes the toe sideways, while hallux rigidus locks it in place.
- Pain typically hits during push-off, the moment your foot needs the toe to bend most.
- Stiffness in one joint can change your entire gait, causing knee, hip or back pain over time.
- A weight-bearing scan shows the joint space under real standing load, which a lying-down scan can miss.
If your big toe has gradually become stiffer and more painful, hallux rigidus is one of the most common reasons. It affects the first metatarsophalangeal joint, the large joint at the base of your big toe. Over time, the smooth cartilage lining that joint wears away, bone rubs against bone, and small bony lumps called osteophytes form around the edges.
People often confuse this condition with a bunion, but the two are quite different. A bunion (hallux valgus) angles the toe inward towards the smaller toes. Hallux rigidus keeps the toe roughly straight but stops it bending upward. Both can be painful, but the treatment path, and what imaging needs to show, is different for each.
What does hallux rigidus feel like?
The most noticeable symptom is pain and stiffness at the base of your big toe, particularly when you walk, climb stairs or push off from the ground. In early stages the joint may only ache after activity. As it progresses, the stiffness can become constant.
Sharp or aching pain at the big toe joint during the push-off phase of walking or running.
The toe will not bend upward as far as it used to. Crouching or going up on tiptoe becomes difficult.
A visible bony lump on top of the joint. Shoes may press against it and cause irritation.
You start walking on the outside of your foot to avoid bending the toe. This alters your whole gait pattern.
Doctors sometimes describe the earlier, milder stage as hallux limitus, meaning the toe still has some movement but less than normal. Hallux rigidus is the more advanced stage where movement is severely limited or lost altogether.
What causes big toe arthritis?
Big toe arthritis usually results from years of normal wear, sometimes accelerated by the shape of your foot, a previous injury or the way you walk. There is no single cause, but several factors raise your risk.
A long first metatarsal or a flat foot places extra stress on the big toe joint with every step.
A stubbed, jammed or fractured toe can trigger cartilage breakdown years later.
Jobs or sports that demand repeated bending of the toe, such as running or squatting, increase joint wear.
A family tendency toward arthritis and the natural ageing of cartilage both play a part.
Can a stiff big toe cause pain in my knee, hip or back?
Yes, and this is one of the most overlooked aspects of hallux rigidus. Your body is a connected chain from your feet to your head. When your big toe cannot bend properly during the push-off phase of walking, you instinctively shift your weight. You might roll onto the outside of your foot, shorten your stride, or twist your ankle slightly with every step.
These small compensations ripple upward. Your ankle, knee and hip all adjust to protect the stiff toe. Over weeks and months, the altered gait analysis pattern can create new pain in places far from the toe itself. It is common for someone with undiagnosed hallux rigidus to present with knee pain, hip stiffness or lower back ache, because their clinician is looking at the painful area rather than the root cause below.
How is hallux rigidus assessed with standing imaging?
A standing weight-bearing x-ray captures the big toe joint while your full body weight presses through it, just as it does when you walk. This is important because a standard lying-down x-ray relaxes the muscles and takes pressure off the joint. In that relaxed position, the joint space can look wider than it really is, and the true degree of cartilage loss may be underestimated.
With ScanAlign, weight-bearing standing imaging, the EOS system captures your feet, ankles, knees, hips and spine in a single upright image. That whole-body view lets your clinician see not only the worn big toe joint, but also how your gait has changed and where compensations are showing up further along the chain. The scan uses about 90% less radiation than a standard x-ray, around ten times less.
What it shows: The joint space under real load. Osteophytes and their relationship to the joint surface. Alignment of the first metatarsal relative to the rest of the foot and the full lower limb. Any gait-driven compensation in the knee, hip or spine.
What it may miss: When the foot is unloaded, gravity is no longer compressing the joint. The space between the bones can appear more generous than it truly is during walking. Compensatory alignment shifts in the ankle, knee and hip relax away, so they do not appear on the image.
When MRI is the better tool: EOS shows bones, joints and alignment clearly. If your clinician needs to look at soft tissue, such as the cartilage surface in detail, the joint capsule or surrounding tendons, MRI is usually the better choice. The two scans complement each other.
What are the options for managing hallux rigidus?
Treatment depends on how far the condition has progressed and how much it affects your daily life. ScanAlign is a diagnostic imaging clinic and does not provide treatment, but understanding the range of approaches can help you have a more informed conversation with your treating clinician.
Conservative options often include stiff-soled or rocker-sole shoes that reduce how much the toe needs to bend, insoles or orthotic plates that support the joint, and activity modifications. Anti-inflammatory medication may help with flare-ups. Physiotherapy can maintain what range of motion remains and strengthen the surrounding muscles.
If conservative measures are not enough, surgical options your clinician may discuss include a cheilectomy, which removes the bony spurs to restore some movement, or a fusion, which locks the joint in a fixed position to eliminate pain. The right approach depends on the severity of the arthritis, your activity level and your goals. Accurate imaging is the starting point for any of these decisions.
Want to see how your big toe joint looks under real standing load? A weight-bearing scan gives your clinician the detail they need to guide the next step.
Book a free video consultationFrequently asked questions about hallux rigidus
No. A bunion (hallux valgus) pushes the big toe sideways towards the smaller toes and creates a bump on the inner side of the foot. Hallux rigidus keeps the toe roughly straight but makes it stiff and painful to bend upward. The two conditions affect the same joint but in different ways.
Most people describe a deep ache or sharp pain at the base of the big toe during push-off. It tends to be worse on hard surfaces, when wearing flat flexible shoes, or after long periods on your feet.
Yes. When the big toe cannot bend, your gait changes. You may roll your foot outward or shorten your stride. Over time these compensations can stress the ankle, knee, hip and even the lower back.
A standing x-ray loads the joint with your full body weight, just as it is during walking. This shows the true joint space and any alignment changes. A lying-down x-ray removes that load and can make the joint look healthier than it really is.
EOS uses about 90% less radiation than a standard x-ray, around ten times less. It captures the whole body in one pass, so there is no need for multiple exposures.
No. ScanAlign is a private self-pay clinic and you can self-refer. You start with a free video consultation to check that a scan is appropriate for your situation.
Pricing details are available on the ScanAlign website. You can discuss costs during your free video consultation.
Hallux limitus is the earlier stage where the big toe still has some upward movement but less than normal. Hallux rigidus is the more advanced stage where movement is severely limited or completely lost. The two sit on the same spectrum.
The cartilage loss itself does not reverse, but symptoms can often be managed effectively with stiff-soled shoes, orthotic insoles, activity changes and sometimes anti-inflammatory medication. Many people live well with the condition without needing surgery.
You stand inside the EOS machine in a natural upright position for around 20 seconds while it captures your image. There is no need to change into a gown unless clothing has metal. The scan is quick, painless and requires no special preparation.
See your big toe joint under real load
A standing whole-body scan shows the joint space, bony spurs and any compensation further up the chain, all in one image.
Book a free video consultationWritten by Abbas Dhami (Specialist Diagnostic Radiographer)
Sources
- Coughlin MJ, Shurnas PS. Hallux rigidus: grading and long-term results of operative treatment. Journal of Bone and Joint Surgery (American). 2003;85(11):2072-2088.
- National Institute for Health and Care Excellence (NICE). Osteoarthritis: care and management. Clinical guideline CG177 (updated 2022).
- Deschamps K et al. Body of evidence supporting the clinical use of 3D multisegment foot models. Gait & Posture. 2011;33(3):338-349.
This page is general information and not a diagnosis.
ScanAlign is the trading name of CoreMed Solutions Ltd and operates under The Harley Street Hospital's CQC licence.