Posterior Tibial Tendinitis Exercises: Heal Inner Ankle Pain

Posterior tibial tendinitis—or posterior tibial tendon dysfunction (PTTD)—causes pain along the inner ankle and arch. The posterior tibial tendon is the main support for your arch, and when it becomes inflamed or weakened, your arch can collapse, leading to flatfoot and significant disability if untreated. The right exercises can reverse early stages and slow progression.

Understanding Posterior Tibial Tendon Dysfunction

The posterior tibial tendon runs from the calf muscle, behind the inner ankle bone (medial malleolus), and attaches to the bones on the inside of your foot. It's the primary dynamic arch support—every step you take, this tendon lifts and stabilizes your arch.

Stages of PTTD:

• Stage 1: Tendinitis with swelling, but tendon intact, arch normal
• Stage 2: Tendon weakened, arch beginning to flatten (flexible flatfoot)
• Stage 3: Rigid flatfoot, significant deformity
• Stage 4: Arthritis develops in ankle joint

Common causes:

• Overuse (running, walking, prolonged standing)
• Flat feet or overpronation
• Age-related degeneration
• Obesity
• Inflammatory conditions (RA, diabetes)
• Acute injury

Symptoms:

• Pain and swelling along inner ankle
• Pain that worsens with activity
• Difficulty standing on tiptoes (single-leg heel raise test)
• Progressive flattening of arch
• Pain in outer ankle (from compensation)
• Foot turns outward when walking

Single-Leg Heel Raise Test

This simple test assesses posterior tibial function:

1. Stand on one leg (hold wall for balance)
2. Try to rise onto tiptoes
3. Look at heel from behind—it should turn inward (invert)

If you can't do this, or your heel doesn't invert, PTTD may be significant. See a podiatrist or orthopedic specialist.

Phase 1: Acute Phase (Weeks 1-4)

Goals

• Reduce inflammation and pain
• Protect the tendon
• Begin gentle activation

Rest and Protection

Activity modification:

• Reduce walking distance
• Avoid running and impact activities
• Avoid prolonged standing
• Use supportive shoes at all times

Orthotics and bracing:

• Over-the-counter arch supports (immediate use)
• Custom orthotics (consider if OTC insufficient)
• Ankle brace or walking boot for severe cases

Ice:

• 15-20 minutes along inner ankle
• 2-3 times daily
• After activity

Non-Weight-Bearing Exercises

Towel scrunches:

1. Sit with foot on towel
2. Scrunch towel toward you using toes
3. 2-3 sets of 15 scrunches
4. Progress to picking up marbles

Ankle alphabet:

1. Sit with foot elevated
2. Draw letters A-Z with toes
3. Move from ankle, not knee
4. Perform 2-3 times daily

Resisted inversion (band):

1. Sit with leg extended
2. Loop band around foot, anchor to other side
3. Turn foot inward (inversion) against resistance
4. 15-20 repetitions
5. 2-3 sets

Resisted plantarflexion:

1. Sit with leg extended
2. Loop band around ball of foot
3. Point toes against resistance
4. 15-20 repetitions
5. 2-3 sets

Phase 2: Strengthening Phase (Weeks 4-8)

Goals

• Progressively load the tendon
• Build arch and ankle strength
• Improve proprioception

Intrinsic Foot Strengthening

Short foot exercise:

1. Sit with foot flat on floor
2. Without curling toes, try to shorten foot by lifting arch
3. Imagine pulling ball of foot toward heel
4. Hold 5 seconds
5. 15-20 repetitions
6. Progress to standing

Toe yoga:

1. Sit with foot flat
2. Lift only big toe while pressing small toes down
3. Then lift small toes while pressing big toe down
4. 10 repetitions each
5. Builds independent toe control

Doming:

1. Sit with foot flat
2. Spread toes wide
3. Then create a dome by lifting arch while keeping toes and heel on floor
4. Hold 5 seconds
5. 15-20 repetitions

Calf and Posterior Tibial Strengthening

Seated heel raises:

1. Sit with feet flat, add weight on knees
2. Raise heels off ground
3. Hold 2 seconds at top
4. Lower slowly
5. 15-20 repetitions, 2-3 sets

Standing heel raises (bilateral):

1. Stand with feet shoulder-width apart
2. Rise onto tiptoes
3. Focus on pushing through big toe side of foot
4. Lower slowly
5. 15 repetitions, 2-3 sets

Standing heel raises (single leg—progress):

1. Stand on one leg (hold wall)
2. Rise onto tiptoes
3. Watch heel—should turn inward
4. Lower slowly
5. 10-15 repetitions each side
6. Only progress here when bilateral is easy

Inversion strengthening with band:

1. Sit with ankle crossed over opposite knee
2. Band anchored to outside
3. Turn sole of foot inward against resistance
4. 15-20 repetitions
5. 2-3 sets

Balance and Proprioception

Single-leg balance:

1. Stand on affected leg
2. Hold 30-60 seconds
3. Progress: close eyes, add head turns
4. Progress: stand on pillow or balance disc

Single-leg stance with perturbations:

1. Stand on one leg
2. Partner gently pushes you from different directions
3. Or use cable/band to pull you off balance
4. 30-60 seconds

Phase 3: Functional Phase (Weeks 8-12+)

Goals

• Build functional strength
• Return to activities
• Prevent recurrence

Advanced Strengthening

Eccentric heel drops:

1. Stand on step, heels hanging off edge
2. Rise onto tiptoes with both feet
3. Shift weight to affected leg
4. Slowly lower heel below step level
5. Use other leg to rise back up
6. 15 repetitions, 2-3 sets

Single-leg heel raises (off step):

1. Stand on step on one leg
2. Rise onto tiptoes
3. Lower below step level
4. Rise back up
5. 10-15 repetitions

Lateral step-downs:

1. Stand on 4-6 inch step
2. Slowly lower opposite foot toward floor
3. Touch heel lightly, push back up
4. 10-12 repetitions each side

Single-leg squats (shallow):

1. Stand on one leg
2. Squat to 30-45 degrees
3. Keep knee tracking over toes
4. 10 repetitions each side

Walking and Running Progression

Walk progression:

1. Start with 10-15 minute pain-free walks
2. Add 5 minutes every few days
3. Monitor for pain during and after

Running progression (if applicable):

1. Walk 30 minutes pain-free first
2. Begin walk-jog intervals (1 min jog, 2 min walk)
3. Progress intervals over 4-6 weeks
4. Monitor arch pain during and after

Stretching

Calf Stretches (Essential)

Gastrocnemius stretch:

1. Face wall, one foot back
2. Keep back heel down, knee straight
3. Lean forward into stretch
4. Hold 30-45 seconds
5. 2-3 times each leg

Soleus stretch:

1. Same position but bend back knee
2. Keep heel down
3. Feel stretch lower in calf
4. Hold 30-45 seconds

Plantar Fascia Stretch

1. Sit and cross ankle over opposite knee
2. Pull toes back toward shin
3. Feel stretch along arch
4. Hold 30 seconds
5. 2-3 times each foot

Achilles Stretch

1. Stand on step, heels hanging off
2. Let heels drop below step level
3. Hold 30-45 seconds

Orthotics and Footwear

Footwear Guidelines

Essential features:

• Motion control or stability shoes
• Firm heel counter
• Arch support built in
• Avoid going barefoot (especially on hard surfaces)
• Avoid flat shoes (flip-flops, ballet flats, minimalist shoes)

Consider:

• Over-the-counter orthotics with arch support
• Custom orthotics for moderate-severe cases
• Ankle brace (lace-up or stirrup) for support during activity

Bracing Options

• Stage 1: Arch supports, possibly ankle sleeve
• Stage 2: Custom orthotics, possibly ankle brace
• Stage 3: Rigid ankle-foot orthosis (AFO), consider surgery
• Stage 4: AFO or surgical reconstruction

Sample Daily Routine

Morning (5 minutes)

1. Short foot exercise: 15 reps each foot
2. Toe yoga: 10 reps each
3. Ankle alphabet: one time through

Midday (5 minutes)

1. Calf stretches: 30 seconds each position, each leg
2. Towel scrunches: 15 reps
3. Resisted inversion: 15 reps

Evening (15 minutes)

Strengthening circuit:

1. Standing heel raises: 3 × 15
2. Single-leg balance: 3 × 30 seconds each
3. Short foot exercise: 3 × 15
4. Eccentric heel drops: 2 × 15 (if in Phase 3)
5. Calf stretches: 30 seconds each

When to Seek Medical Attention

See a podiatrist or orthopedic foot specialist if:

• Pain doesn't improve after 4-6 weeks of conservative treatment
• You can't do a single-leg heel raise
• Arch is visibly flattening
• Significant swelling persists
• Pain with daily activities

Treatment options beyond exercise:

• Custom orthotics
• Physical therapy
• Immobilization (boot or cast)
• Corticosteroid injection (rarely, can weaken tendon)
• Surgery (tendon repair, tendon transfer, osteotomy, fusion)

Prevention Strategies

Once recovered:

1. Continue strengthening - Heel raises and arch exercises 2-3 times/week
2. Wear supportive shoes - Always, especially for activity
3. Use orthotics - If recommended, don't skip them
4. Maintain healthy weight - Reduces tendon stress
5. Listen to your body - Pain is a warning sign
6. Stretch calves daily - Tight calves increase arch stress

The Bottom Line

Posterior tibial tendinitis is progressive—the earlier you address it, the better the outcome. Remember:

1. Get proper footwear and orthotics - This is as important as exercise
2. Strengthen the posterior tibial tendon - Heel raises with inversion
3. Build arch support - Intrinsic foot exercises
4. Progress gradually - Tendons heal slowly
5. Monitor your arch - If flattening progresses, see a specialist

With consistent exercise and proper support, most Stage 1 and Stage 2 PTTD can be managed conservatively. The key is starting early and staying consistent. Your arch—and your ability to walk pain-free—depends on that posterior tibial tendon. Treat it well.