Hallux Rigidus

Hallux rigidus, is a condition where movement of the big toe is restricted to varying degrees. This disorder can be very troubling and even disabling, since we use the all–important big toe whenever we walk, stoop down, climb up, or even stand.

The most common site of arthritis in the foot is at the base of the big toe. This joint is called the metatarsophalangeal, or MTP joint. It’s important because it has to bend every time you take a step. If the joint starts to stiffen, walking can become painful and difficult.

In the MTP joint, as in any joint, the ends of the bones are covered by a smooth articular cartilage. If wear-and-tear or injury damage the articular cartilage, the raw bone ends can rub together. A bone spur, or overgrowth, may develop on the top of the bone. This overgrowth can prevent the toe from bending as much as it needs to when you walk. The result is a stiff big toe, or hallux rigidus.

Hallux rigidus usually develops in adults between the ages of 30 and 60 years. No one knows why it appears in some people and not others. It may result from an injury to the toe that damages the articular cartilage or from differences in foot anatomy that increase stress on the joint.

What Is Hallux Rigidus?

“Hallux” refers to the big toe, while “rigidus” indicates that the toe is rigid and cannot move. Hallux rigidus is actually a form of degenerative arthritis (a wearing out of the cartilage within the joint that occurs in the foot and other parts of the body).

Because hallux rigidus is a progressive condition, the toe’s motion decreases as time goes on. In its earlier stage, motion of the big toe is only somewhat limited — at that point, the condition is called “hallux limitus.” But as the problem advances, the toe’s range of motion gradually decreases until it potentially reaches the end stage of “rigidus” — where the big toe becomes stiff, or what is sometimes called a “frozen joint.” Other problems are also likely to occur as the disorder progresses.

Symptoms

• Pain in the joint when you are active, especially as you push-off on the toes when you walk
• Swelling around the joint
• A bump, like a bunion or callus, that develops on the top of the foot
• Stiffness in the great toe and an inability to bend it up or down

What Causes Hallux Rigidus?

Common causes of hallux rigidus are faulty function (biomechanics) and structural abnormalities of the foot that can lead to osteoarthritis in the big toe joint. This type of arthritis — the kind that results from “wear and tear” — often develops in people who have defects that change the way their foot and big toe functions. For example, those with fallen arches or excessive pronation (rolling in) of the ankles are susceptible to developing hallux rigidus.

In some people, hallux rigidus runs in the family and is a result of inheriting a foot type that is prone to developing this condition. In other cases, it is associated with overuse — especially among people engaged in activities or jobs that increase the stress on the big toe, such as workers who often have to stoop or squat. Hallux rigidus can also result from an injury–even from stubbing your toe. Or it may be caused by certain inflammatory diseases, such as rheumatoid arthritis or gout. Your podiatric foot and ankle surgeon can determine the cause of your hallux rigidus and recommend the best treatment.

Diagnosis of Hallux Rigidus

The sooner this condition is diagnosed, the easier it is to treat. Therefore, the best time to see a podiatric surgeon is when you first notice that your big toe feels stiff or hurts when you walk, stand, bend over, or squat. If you wait until bone spurs develop, your condition is likely to be more difficult to manage.

In diagnosing hallux rigidus, the podiatric surgeon will examine your feet and manipulate the toe to determine its range of motion. X–rays are usually required to determine how much arthritis is present as well as to evaluate any bone spurs or other abnormalities that may have formed.

Non–Surgical Treatment

If your condition is caught early enough, it is more likely to respond to less aggressive treatment. If fact, in many cases, early treatment may prevent or postpone the need for surgery in the future. That’s why it is important to see your podiatric surgeon when you first begin to notice symptoms.

Treatment for mild or moderate cases of hallux rigidus may include one or more of these strategies:

• Shoe modifications. Shoes that have a large toe box should be worn, because they put less pressure on your toe. Stiff or rocker–bottom soles may also be recommended. Most likely, you’ll have to stop wearing high heels.
• Orthotic devices. Custom orthotic devices may improve the function of your foot.
• Medications. Nonsteroidal anti–inflammatory drugs (NSAIDs), such as ibuprofen, may be prescribed to help reduce pain and inflammation. Supplements such as glucosamine–chondroitin sulfate and some vitamins and minerals may also be helpful.
• Injection therapy. Injections of corticosteroids in small amounts are sometimes given in the affected toe to help reduce the inflammation and pain.
• Physical therapy. Ultrasound therapy or other physical therapy modalities may be undertaken to provide temporary relief.

Surgical Treatment

In many cases, surgery is the only way to eliminate or reduce pain. There are several types of surgery that can be performed to treat hallux rigidus. These surgical procedures fall into two categories:

• Some procedures reconstruct and “clean up” the joint. The surgeon removes the arthritic damage from the joint as well as any accompanying bone spurs, and then alters the position of one or more bones in the big toe. These procedures are designed to preserve and restore normal alignment and function of the joint as well as reduce or eliminate pain.
• More aggressive procedures are used when the joint cannot be preserved. These may involve fusing the joint, or removing part or all of the joint and, in some cases, replacing it with an implant, such as is done for the hip or knee. These procedures eliminate painful motion in the joint and provide a stable foot.

The procedure that is used to correct hallux rigidus depends on many factors, including the cause of the condition and the severity, as well as the patient’s age, occupation and activity level. Your podiatric surgeon is trained to select a surgical procedure best suited to your particular condition and needs.

Common foot & ankle conditions treated at our practice