Hallux Rigidus:
When the Big Toe Stops Bending

What hallux rigidus is

The first MTP joint carries a large share of body weight at the end of each step. As the heel lifts, the big toe must bend upward (dorsiflex) — and it must bend further still when climbing stairs, squatting or running. In hallux rigidus, the joint cartilage gradually thins and the body responds by building bone spurs (osteophytes), particularly along the top of the metatarsal head. Those spurs act like a doorstop: they block upward bending and are pinched each time the toe is forced into extension.

The early stage, when motion is reduced but not yet lost, is sometimes called hallux limitus; "rigidus" describes the later, stiffer end of the same spectrum. It differs from a bunion (hallux valgus), in which the main problem is the toe drifting sideways toward the second toe — although the two can coexist.

How common it is and who gets it

Foot osteoarthritis is far more common than many people realise. A review of population studies by Roddy and Menz reported that symptomatic radiographic foot osteoarthritis affects about 17% of adults aged 50 and over, and that the first MTP joint is the most frequently affected joint in the foot. Hallux rigidus usually appears from middle age onward, but it can begin in younger, active adults.

The exact cause is often unclear. Factors that have been associated with it include previous injury to the joint (for example, a significant turf toe sprain or a cartilage injury), a family history, the shape of the metatarsal head, and inflammatory or metabolic conditions such as gout. Research continues on how foot mechanics fit in: a 2025 weight-bearing CT study from Jikei University in Tokyo found that feet with early hallux rigidus showed less of the normal "windlass" tightening of the arch when the big toe bends, though it could not show which came first. An older long-term surgical series by Coughlin and Shurnas did not find an association with first-ray hypermobility or an elevated first metatarsal, illustrating that the mechanical story is still debated.

Symptoms

• Pain at the base of the big toe, worse when pushing off, walking uphill, climbing stairs, squatting or kneeling with the toes bent
• Stiffness — the toe will not bend upward as far as the other side
• A firm bump on the top of the joint that can rub on shoes, sometimes with numbness over the toe from pressure on a small skin nerve
• Swelling or aching after activity, and discomfort in thin-soled or high-heeled shoes
• Walking on the outer edge of the foot to avoid the painful joint, which can lead to aching on the outside of the foot

How it is diagnosed

The examination focuses on the range of upward and downward motion of the toe, where it hurts (pain only at the end of upward bending suggests the spurs on top are the main problem; pain through the middle of the range suggests more widespread cartilage loss), and the size of any dorsal bump. Weight-bearing X-rays of the foot are the standard test, showing joint-space narrowing, spurs and the overall alignment of the foot. MRI or CT is not usually needed but may be used if the picture is unclear, for example to look for a cartilage defect in a younger patient.

Several grading systems exist. One widely used clinical-radiographic system is that of Coughlin and Shurnas, which combines motion, X-ray findings and examination:

Grade	Typical findings (simplified)
Grade 0–1	Stiffness with little or occasional pain; small spur on top of the joint, joint space largely preserved
Grade 2	More restricted motion with more consistent pain; moderate spurs and some joint-space narrowing
Grade 3	Marked stiffness, near-constant pain at the end of motion; substantial spurs and narrowing
Grade 4	Same as grade 3 but with pain throughout the mid-range of motion — a sign of more widespread cartilage loss

Conditions that can look similar

Condition	Distinguishing feature
Bunion (hallux valgus)	Toe drifts sideways; bump is on the inner side of the joint rather than on top
Gout	Sudden attacks of intense pain, redness and heat, often overnight; may be confirmed with blood tests or joint fluid analysis
Turf toe	A sprain after a specific hyperextension injury rather than gradual wear
Sesamoid problems	Pain is under the joint (the sole side), not on top

Non-surgical treatment

The aim of non-surgical care is to reduce how much the painful joint has to bend with each step, and to settle flare-ups. Common measures include:

The research base here is smaller than for knee or hip arthritis. A randomised trial by Menz and colleagues in 102 people found that prefabricated foot orthoses and rocker-sole shoes reduced foot pain to a similar degree over 12 weeks, but the orthoses were worn more consistently and caused fewer side effects. A later sham-controlled trial by Munteanu and colleagues found that carbon-fibre shoe-stiffening inserts reduced pain slightly more than sham inserts, with more participants reporting overall improvement — though the authors noted that not everyone will experience a worthwhile benefit.

Surgical options

Surgery is generally considered when pain continues to limit daily life despite an adequate trial of footwear and other measures. The choice depends mainly on how much healthy cartilage remains, where the pain occurs in the range of motion, and the person's activities and priorities.

Procedure	What it involves	Generally considered for
Cheilectomy	Removing the bone spurs and the upper part of the metatarsal head to free up upward motion; the joint is preserved	Milder to moderate disease, especially pain at the end of upward bending
Osteotomy	Cutting and repositioning a bone near the joint to change how it moves or is loaded; sometimes combined with cheilectomy	Selected mild to moderate cases
Arthrodesis (fusion)	Removing the worn joint surfaces and fixing the bones together with screws and/or a plate so that they heal as one	Advanced disease or failed earlier surgery
Implant / interposition options	Replacing part of the joint surface (for example a small synthetic cartilage implant) or placing soft tissue between the bones to preserve some motion	Selected advanced cases where keeping motion is a priority; availability varies by country

Cheilectomy

In the long-term series by Coughlin and Shurnas, 92% of cheilectomies were considered successful for pain relief and function, and the authors recommended it for grade 1 and 2 and selected grade 3 joints. A later study of 169 feet by Sidon and colleagues, followed for an average of 6.6 years, found about 70% were still pain-free at final follow-up and about 5% had needed a second operation; most recurrences of pain occurred within the first two years. Because it keeps the joint, cheilectomy leaves fusion available as a later option if needed.

Arthrodesis (fusion)

Fusion has long been regarded as the most reliable operation for advanced hallux rigidus because it removes the painful motion altogether. The trade-off is a permanently stiff big toe joint: most people walk normally, including in flat shoes, but very high heels and activities that need the toe to bend (such as some yoga positions or sprinting on the toes) become harder. Healing of the fused bones takes several weeks, typically in a protective shoe, and non-union or later hardware removal are recognised possibilities.

Motion-preserving implants

Earlier generations of big toe joint replacements had problems with loosening and bone loss. A newer approach uses a small hydrogel implant that resurfaces part of the metatarsal head. In a randomised non-inferiority trial by Baumhauer and colleagues (202 analysed patients), pain relief and function at two years were statistically equivalent to fusion, with toe motion modestly improved in the implant group; about 9% of implants were removed and converted to fusion within two years. Longer-term data are still accumulating, and access to these devices varies between countries, so they are discussed case by case.

When to see a specialist

It is worth having a big toe assessed if pain or stiffness persists for more than a few weeks, limits walking or exercise, or is accompanied by a growing bump on top of the joint. Seek prompt medical attention for a suddenly red, hot, swollen toe — this pattern is more typical of gout or, rarely, infection, and needs a different approach. A foot and ankle orthopaedic surgeon, often working alongside a podiatrist, is the specialist who usually manages hallux rigidus.