Capsulitis and Metatarsalgia: Why It Feels Like You’re Walking on a Rock

One of the Most Commonly Misdiagnosed Foot Problems

One of the biggest frustrations for patients is being told they have a condition they don’t actually have.

In my practice, for every 10 patients referred with a diagnosis of a neuroma, approximately 9 actually have capsulitis or another mechanical overload problem. Neuromas are not that common.

Many patients arrive after months—or even years—of treatment for a neuroma they never actually had. This confusion is understandable because both conditions cause pain in the forefoot.

But they are very different problems.

Capsulitis

 Joint problem

Feels like walking on a rock

Pressure and soreness

Symptoms beneath the second metatarsal

Frequently associated with a callus

Capsulitis is a biomechanics problem.

Why Is the Second Metatarsal Usually the Problem?

The second metatarsal is the most common location for capsulitis because it can be longer than the 1st metatarsal. Or the first metatarsal can be short or float upward, like a card table leg. This volunteers the second metatarsal to do more work.

For many people, this is simply how they were born.

Morton’s Foot Type

One of the strongest risk factors is a hereditary foot structure called a Morton’s toe. This is a noticeably long 2nd toe. (Morton was a busy guy and has several foot things named after him).

Despite the name, this does not mean you have a long second toe. It is a result of a long 2nd metatarsal pushing the 2nd toe further out. This can be a strong family trait. So, you can blame your parents and grandparents.

Other Conditions That Shift Pressure

Several conditions can force more weight onto the second metatarsal, including:

• Hammertoes
• Bunions
• Hallux rigidus (arthritis of the big toe)
• A flexible first ray (folding table leg)
• Flatfoot deformity
• Previous injuries (stress fracture to an adjacent metatarsal)
• Tight calf muscles (Equinus)

No matter the cause, the result is the same:

One metatarsal is doing more work than it was designed to do.

Can Tight Calf Muscles Cause Pain in the Ball of the Foot?

Absolutely.

One of the most overlooked causes of forefoot pain is an Equinus, or tight Achilles complex. This is the largest tendon in the body. When it is tight, it forces the center of gravity forward to the forefoot. This is a major part of the majority of foot problems.

This increased pressure can contribute to:

• Capsulitis/Metatarsalgia
• Hammertoes
• Calluses
• Stress fractures

Sometimes the pain in the ball of the foot is due to the tight calf muscles. The answer is a very boring but effective stretching program.

Can High Heels Cause Capsulitis?

High heels may not be the cause, but they can definitely make this worse. An elevated shoe will increase forefoot pressure, just like a tight Achilles.

For individuals with an Equinus, Morton’s foot type, bunions, or other biomechanical abnormalities, high heels can accelerate the development of symptoms.

The question is NOT whether high heels are bad.

The question is whether your foot structure can tolerate the additional pressure.

It may not be the shoes; it could be you!

Why Do I Have a Callus Under My Foot?

A callus is a secondary problem. It is smoke from a fire… not the fire.

Your body creates a callus because the skin is getting excessive pressure from a bone. The skin will try to protect itself, so it builds up a layer of armor. As the pressure increases, the callus gets thicker and more painful. A common misconception is that thinning or attempts to remove the callus will solve the problem… the callus always comes back.

Rather than simply trimming the callus, the more important question is:

Why is this area receiving too much pressure?

Common Symptoms of a Stress Fracture

• Progressive worsening over time
• Increase in pain
  • The area of pain will increase in size
  • It can hurt even on top of the joint
• Increase in swelling
  • The entire foot can swell

Can Capsulitis Heal on Its Own?

The equation for this problem is Deformity + # of steps + bone quality = Capsulitis. A change in any of the 3 causes will affect the result. The common treatment is to decrease activity. In the early stages, this will improve symptoms temporarily. Expect a return of symptoms with a return of activity. Unfortunately, the underlying biomechanics remain the same.

Many patients experience a cycle of:

• Pain
• Temporary improvement
• Increased activity
• Recurrence of pain and swelling that stops walking and activity.

The earlier the condition is identified, the easier it is to treat and the shorter the time to comfort.

What Happens If I Ignore Capsulitis?

Einstein proposed a definition of insanity: Doing the same thing over and over again while expecting different outcomes. Reducing activity is not optimal and not what I recommend. I prefer to see increased activity during treatment while increasing comfort.

As the capsulitis becomes chronic, the thick plantar capsule/plate begins to weaken and fail. The toe will “float up” and drift over the adjacent toe. This is the end stage of the deformity and takes years to develop. It is also one of the most difficult foot deformities to correct. There is plenty of warning. Don’t let it get to this stage!

Without treatment, patients may develop:

• Progressive pain
• Increasing activity limitations
• Larger calluses
• Hammertoe deformities
  • Joint instability
  • Plantar plate injuries
  • Toe drifting
  • Crossover toe deformity (the foot points North and the toe points East)
• Stress fractures (a long table leg can only take so much before it fails)

What begins as “walking on a pebble” eventually becomes a significant structural problem.

Can Capsulitis Cause a Stress Fracture?

Yes.

When a metatarsal absorbs excessive pressure over a prolonged period, the bone attempts to adapt by becoming thicker and stronger.

If the stress exceeds the bone’s ability to adapt, a stress reaction or stress fracture can occur. The foot will give plenty of warning. If a car’s check engine light is ignored too long…bad things happen.

This is one of the reasons early diagnosis is so important.

Why Previous Treatment May Have Failed

Many patients come to our office after trying:

• Injections
• Pads
• Shoe changes
• Anti-inflammatory medications
• Treatment for a neuroma they never actually had

These treatments often fail because they address the symptom rather than the cause.

The goal is not simply to make the pain hurt less.

The goal is to determine why one metatarsal is carrying more pressure than it was designed to handle.

Once that question is answered, treatment becomes far more predictable.

Frequently Asked Questions

Is capsulitis the same as a neuroma?

No. A neuroma is a nerve problem. Capsulitis is a pressure and biomechanics problem. Want to see the difference?

Why does it feel like I’m walking on a rock?

A prominent metatarsal will feel like a “lump”  when it is too long or when pushed down by a hammer toe.

Does a long second toe cause capsulitis?

Usually not. The problem is often a relatively long second metatarsal bone.

Can capsulitis heal on its own?

Symptoms may improve temporarily, but the underlying cause (anatomy and mechanics) remain unchanged.

Can capsulitis cause a stress fracture?

Yes. Chronic bone overload can lead to stress reactions and stress fractures.

Can tight calf muscles cause forefoot pain?

Absolutely. Equinus is one of the most overlooked causes of forefoot pain. A tight Achilles will transfer more weight to the forefoot.

What happens if capsulitis is left untreated?

Pain often progresses and can lead to deformity, instability, and stress fractures.

How long does capsulitis take to heal?

Many patients experience symptom relief within days to a week, but complete healing may require weeks to months.

Do I need surgery?

Most patients improve without surgery if the diagnosis is made early.

Can I continue exercising?

Our goal is to maintain activity. When the painful area is properly offloaded and the underlying biomechanics are addressed, results are quick to follow.

The Bottom Line

If it feels like you’re walking on a rock, there is usually a reason.

In most cases, the problem is not simply inflammation.

The problem is that one part of your foot is carrying more pressure than it was designed to handle.

Once we identify why the pressure shifted, we can develop a treatment plan that addresses the real problem—not just the symptoms—and help restore the way your foot was designed to work.

Call Central Indiana’s go-to foot doc and schedule your appointment today.