Foot pain has a special way of bringing your world to a halt… often quite literally. While most people have heard of stress fractures or plantar fasciitis, Cuboid Syndrome seems to hide in the shadows despite being an unexpectedly common cause of lateral foot pain. Here is the lowdown on Cuboid Syndrome, what it is, why it is so tricky to identify, and what can be done about it.

This pesky condition involves the smallest of the small bones on the lateral edge of the foot, known as the cuboid bone. Symptoms include persistent, nagging pain, which can be quite frustrating when one simply needs to walk or stand.

Whether you are an athlete, a recreational walker, or someone who has recently sprained an ankle, understanding Cuboid Syndrome could just be what you need to understand why your foot is still hurting.

Understanding Cuboid Syndrome Nature and Mechanics

Cuboid refers to the cube-shaped bone located in the lateral foot, articulating with the calcanus and the fourth and fifth metatarsals.

Despite this footprint, where the cuboid is in the kinematic chain makes it inherently important for weight transfer during gait. When the cuboid bone subluxates—a slightly out of place shift—it affects the joints and soft tissue.

Causes of the condition

Most of the time, Cuboid Syndrome starts after an ankle sprain, most commonly an inversion injury where the outer aspect of the foot twists laterally. This causes the peroneus longus tendon which runs below the cuboid to drag the bone out of joint.

However, repeats of the injury also can cause Cuboid Syndrome. This occurs from increased walking or running long distances, dancing, or continued wearing of deconditioned, unsupported shoes over long time periods. Repetitive stress from overuse is underappreciated as a culprit, especially in runners, athletes, or other sports people.

Increased training without adequate rest can then wreak havoc on the walking well-being.

Why it can be difficult to identify

Identifying Cuboid Syndrome can be really tricky; assessment and imaging tests often show a healthy ankle. The problem with image is that the displacement is not always evident. In fact, several individuals have been told they were well on their way to healing from an ankle sprain, when in reality, the specific cuboid was still out of place.

Patients will often report pain along the lateral border of the foot sometimes moving toward the toes or the heels. Clinical impression of pain locating on the outer edge of the foot can be confounded with residual soft tissue pain.

Identifying Cuboid Syndrome Symptoms and Diagnosis

Cuboid pain is located on the lateral border of the middle third of the foot; it can be pinpoint or diffuse.

Pain worsens during weight bearing activities but can alleviate by resting.

Key indicators of the condition

Palpating the cuboid will fill painful, tender areas or swelling and increase symptoms. Weakness on push-off when running or walking can be felt. Weight shifting can cause pain and awareness of instability. Many will note the pain is a dull ache from spreading around the dorsal aspect of the midfoot.

When asked, athletes often says pain started gradually following long runs or training cycles.

Confirming the diagnosis

Distraction to the cuboid can be assessed by a clinician, often a sports medicine doctor, physiotherapist, or podiatrist with special training, demonstrated by the midtarsal adduction test. X-ray images may be normal, but magnetic resonance imaging will sometimes display bone marrow edema that supports proper diagnosis.

Most importantly, do not automatically jump to a conclusion about the cause of foot pain.

A history of previous injury, footwear preferences and biomechanics may offer clues to the origin of the lack of normal function.

Nailing a diagnosis

Diagnosis of Cuboid Syndrome is made with the presence of midfoot pain over the lateral aspect present after the injury or repeated trauma. Palpating on the cuboid will elicit pain or tender spots. Pain during weight bearing, localized swelling and symptoms worsened on pushing off are also common. Assessment by using the midtarsal adduction test is typical, although imaging may reveal either joint or bone abnormalities.

Treatment options and prognosis

Fortunately, Cuboid Syndrome is a treatable condition. Once diagnosed, the treatment most commonly used is a cuboid manipulation or the “cuboid whip,” which is performed by a charitably induced manual therapist. This Chiropractic-like procedure repositioned the bone back into place and relief often follow immediately afterwards.

Post-manipulation, the tissues and muscles will require time to regain strength and ‘hold’ the position of the realigned cuboid. Physical therapy including balancing exercises and muscle tone and strength to stabilize the cuboid in place is hugely helpful. Aided by taping, particularly Low-Dye taping for use as support for a number of weeks, also helps to unload the cuboid during the running or increased use period.

The foot can be very finicky about change. Supportive footwear has a huge role in progress and prevention. Long term, orthotics or insoles may be made to support the lateral midfoot which is often part of the reason for recurrent injury. Broader activity level adjustments should be made as there is no sense rushing back to strain the structures again.

As before, being sensitive to the way in which the foot interacts with the rest of the body and the gait cycle can result in proactive treatment that avoids future problems. Recovery can be anywhere from several weeks if diagnosed early to several months if mishandled or allowed to become chronic initially.

Just by listening to your body, working with an experienced physician or healthcare professional, and slowly making minor adjustments to footwear and training routine, the difference can be dramatic in the amount of lasting relief you get and preventing this annoying condition from returning again and again.