Plantar Fasciitis or Heel Bruise? How to Tell What's Causing Your Foot Pain

You wake up, take your first steps out of bed, and feel it: sharp pain in the bottom of your heel. As you walk around, it gradually improves, but you're left wondering what's wrong. Is this plantar fasciitis? A heel bruise? Something else entirely?

If this describes your morning routine, you're dealing with heel pain. At Nashville Physical Therapy & Performance, we see this constantly during spring marathon training season as runners increase mileage. But here's what most runners struggle with: plantar fasciitis and heel bruises can feel similar initially, yet they require completely different treatment approaches.

Getting the diagnosis right matters. Treating a heel bruise like plantar fasciitis (or vice versa) can delay your recovery by weeks or even make the problem worse.

Let's talk about how to tell the difference, why it matters, and what to do about each one.

Plantar Fasciitis or Heel Bruise? How to Tell What's Causing Your Foot Pain:

Understanding the Two Conditions

While both cause heel pain, plantar fasciitis and heel bruises are fundamentally different problems:

Plantar Fasciitis

This is inflammation or degeneration of the plantar fascia, a thick band of tissue that runs along the bottom of your foot from your heel to your toes. It acts like a bowstring, supporting your arch and absorbing shock during walking and running.

When the plantar fascia is repeatedly overloaded, it develops micro-tears and inflammation at its attachment point on your heel bone.

Typical characteristics:

• Sharp, stabbing pain in the bottom of the heel

• Worst with the first steps in the morning

• Improves after 5-10 minutes of walking

• Returns after periods of sitting or rest

• Worsens with barefoot walking or walking on hard surfaces

• Develops gradually over weeks or months
  

Heel Bruise (Fat Pad Contusion)

This is bruising of the fat pad on the bottom of your heel, usually from impact trauma or repetitive pounding. The fat pad acts as a natural cushion, absorbing impact forces. When bruised, it can't effectively protect the heel bone.

Typical characteristics:

• Deep, aching pain directly on the center of the heel bone

• Worse with direct pressure or impact (walking, standing)

• Doesn't necessarily feel worse in the morning

• Pain is constant during weight-bearing activities

• May have visible bruising (though not always)

• Usually develops suddenly after a specific incident or change
  

How to Tell the Difference: Self-Assessment Tests

Try these four tests to determine whether you're dealing with plantar fasciitis or a heel bruise:

Test 1: The Morning Pain Test

How does your heel feel when you first wake up and take your first steps?

Plantar fasciitis: Severe, sharp pain with the first 3-5 steps. This is the hallmark symptom. Pain gradually improves as you walk around for 5-10 minutes.

Heel bruise: Pain is present but doesn't have the characteristic "first-step" severity. Pain level stays relatively consistent whether it's your first step or your tenth step.

Test 2: The Palpation Test

Press firmly with your thumb on different parts of your heel:

• The inside edge of your heel (where the plantar fascia attaches)

• The center of your heel bone (the fat pad area)
  

Plantar fasciitis: Extreme tenderness along the inside edge of your heel where the plantar fascia attaches to the heel bone. Pressing directly on the center of the heel is less painful.

Heel bruise: Maximum tenderness directly in the center of your heel bone. The inside edge tenderness is less pronounced.

Test 3: The Toe Extension Test

Sit down and gently pull your toes back toward your shin (dorsiflexing your foot).

Plantar fasciitis: This stretches the plantar fascia and typically recreates or increases your heel pain.

Heel bruise: This movement doesn't significantly change your pain level since you're not loading the bruised fat pad.

Test 4: The Impact Test

Hop gently on your affected foot 5-10 times.

Plantar fasciitis: Pain is present but may be tolerable, especially if you've been walking around for a while. The pain is more of a sharp, specific sensation.

Heel bruise: Deep, aching pain with each impact that feels like you're landing on a bone bruise (because you are). This test is often intolerable with a heel bruise.

If your self-assessment suggests plantar fasciitis (severe morning pain, inside heel tenderness, worsens with toe extension), you need one treatment approach. If it suggests a heel bruise (central heel tenderness, constant pain with impact, no morning-specific pattern), you need a different approach.

What Causes Each Condition in Runners

Understanding why these injuries develop helps prevent recurrence:

Plantar Fasciitis Triggers

Rapid Mileage Increases: The classic spring marathon training mistake. Going from 20 to 40 miles per week in a month overloads the plantar fascia before it can adapt.

Tight Calves: Limited ankle dorsiflexion increases tension on the plantar fascia with every step. Research shows that 80% of people with plantar fasciitis have restricted ankle mobility.[^1]

Inadequate Footwear: Worn-out shoes, minimal support, or switching to racing flats too abruptly reduces shock absorption and increases plantar fascia stress.

Hard Surfaces: Excessive running on pavement without adequate cushioning or recovery stresses the plantar fascia.

Weak Foot Intrinsic Muscles: The small muscles in your foot help support your arch. When weak, the plantar fascia has to work harder.

Heel Bruise Triggers

Sudden Impact: Landing hard on a rock, stepping into a pothole, or jumping down from a height can bruise the heel fat pad.

Worn-Out Shoes: Shoes that have lost cushioning don't protect the heel adequately, leading to repetitive trauma.

Increased Downhill Running: Downhill running increases impact forces significantly, which can bruise the heel over time.

Hard Surface Training: Repeatedly pounding pavement without adequate recovery allows micro-trauma to accumulate in the fat pad.

What Actually Works for Plantar Fasciitis

If your self-assessment suggests plantar fasciitis:

1. Calf and Plantar Fascia Stretching

Calf Stretch: Lunge position, back heel down, lean forward. Hold 45-60 seconds. Do both straight-leg (targets gastrocnemius) and bent-knee (targets soleus) versions.

Plantar Fascia Stretch: Sit and pull your toes back toward your shin while massaging along the arch of your foot. Hold 30-45 seconds, repeat 5 times.

Morning Routine: Before taking your first steps, perform 30 seconds of toe pulls and ankle circles while still in bed. This reduces the shock of that first painful step.

2. Foot Strengthening

Towel Scrunches: Place a towel on the floor. Use your toes to scrunch the towel toward you. Repeat 20 times, 2 sets.

Arch Doming: While seated, press your toes flat into the ground and try to lift your arch without curling your toes. Hold 5 seconds, repeat 15 times.

3. Load Management

Reduce running volume by 30-40% initially. Avoid barefoot walking and hard surfaces. Wear supportive shoes with cushioning at all times, even at home.

4. Night Splints (Optional but Effective)

Wearing a night splint that keeps your foot dorsiflexed while you sleep prevents the plantar fascia from tightening overnight. This dramatically reduces morning pain for many people.

What Actually Works for Heel Bruises

If your self-assessment suggests a heel bruise:

1. Cushioning and Protection

Heel Cups or Gel Pads: Insert cushioned heel cups into all your shoes. These provide extra protection to the bruised fat pad during the healing process.

Supportive Footwear: Wear well-cushioned shoes with good heel counters at all times. Avoid barefoot walking completely.

Avoid Direct Impact: No jumping, running, or activities that involve heel strike until pain resolves. This is critical for healing.

2. Ice and Anti-Inflammatory Measures (for pain control)

Ice the heel for 15 minutes, 3-4 times daily to reduce inflammation. Frozen water bottle rolls work well.

Unlike plantar fasciitis (where aggressive stretching helps), heel bruises need rest and protection from further trauma.

3. Gradual Return to Activity

Heel bruises typically take 2-4 weeks to heal. Return to running only when you can walk pain-free for several days. When you do resume running, start at 50% of your previous volume on softer surfaces.

4. Cross-Training

Maintain fitness through cycling (no standing sprints) or swimming while the bruise heals. These activities don't load the heel directly.

The Timeline: How Long Does Recovery Take?

Plantar fasciitis: With appropriate treatment, most cases improve within 6-8 weeks. However, chronic cases (symptoms present for 6+ months) can take 3-6 months to fully resolve.

Heel bruise: Most heal within 2-4 weeks with proper protection and rest from impact activities. However, severe bruises can take 6-8 weeks.

The longer you've had symptoms before starting appropriate treatment, the longer recovery typically takes. Early intervention matters.

When Heel Pain Needs Professional Evaluation

Seek evaluation from a physical therapist if:

• Pain persists beyond 2-3 weeks despite appropriate self-treatment

• You're unsure whether you have plantar fasciitis or a heel bruise

• You've tried treatments for one condition but aren't improving (you might have the other)

• Pain is severe enough to significantly alter your walking gait

• You have numbness or tingling in your foot

• You're training for a specific race and need guidance on continuing safely
  

At Nashville Physical Therapy & Performance, we thoroughly assess your foot mechanics, identify contributing factors (tight calves, weak foot muscles, training errors), and create a targeted treatment plan specific to your diagnosis.

Plantar Fasciitis or Heel Bruise? How to Tell What's Causing Your Foot Pain: The Bottom Line

Heel pain when running isn't always the same problem. Plantar fasciitis and heel bruises can feel similar initially, but they require different treatment approaches. Plantar fasciitis responds to stretching and gradual loading; heel bruises need protection from impact and time to heal.

Use the self-assessment tests to determine what you're dealing with. If you have plantar fasciitis, prioritize stretching and gradual strengthening. If you have a heel bruise, protect the area and avoid impact until it heals.

When in doubt, get evaluated early. Treating the wrong condition wastes time and can delay your return to pain-free running.

Dealing with heel pain that won't resolve? Schedule an evaluation at Nashville Physical Therapy & Performance. We'll determine whether you have plantar fasciitis, a heel bruise, or another cause, and create a targeted plan to get you back to running pain-free. Call us at 615-428-9213 or book online at nashvillept.com.

References

[^1]: Patel A, DiGiovanni B. Association between plantar fasciitis and isolated contracture of the gastrocnemius. Foot & Ankle International. 2011;32(1):5-8.