Anatomy & Body Systems
1. Tarsal Tunnel
The tarsal tunnel is located:
- Behind the medial malleolus (inner ankle bone)
- Bounded by:
- Medial malleolus (anterior)
- Calcaneus (posterior)
- Flexor retinaculum (roof)
- Talus and navicular bones (floor)
2. Tibial Nerve
The tibial nerve divides within the tarsal tunnel into:
- Medial plantar nerve
- Lateral plantar nerve
- Calcaneal branch
These branches provide sensation to the sole of the foot.
Types & Classifications
| Type | Description |
|---|---|
| Idiopathic | No identifiable cause |
| Space-occupying lesion | Tumor, cyst, ganglion |
| Traumatic | Post-traumatic swelling/scar |
| Biomechanical | Flat feet, overpronation |
| Systemic | Diabetes, arthritis |
Causes & Root Factors
1. External Compression
- Tight footwear
- Ankle braces
- Casts
2. Space-Occupying Lesions
- Ganglion cysts
- Tumors
- Varicose veins
- Bone spurs
3. Biomechanical Factors
- Flat feet (pes planus)
- Overpronation
- Ankle instability
4. Systemic Conditions
- Diabetes
- Rheumatoid arthritis
- Hypothyroidism
Risk Factors
- Footwear choices
- Activity modification
- Weight management
- Proper warm-up
- Previous ankle injuries
- Diabetes
- Anatomical variations
- Age
Signs & Characteristics
Symptoms:
- Burning pain on sole of foot
- Numbness or tingling in sole
- Pain radiating up leg (sometimes)
- Worse with standing or walking
- Better with rest and elevation
- Pain at night (sometimes)
| Finding | Description |
|---|---|
| Tinel's sign | Tingling on tapping behind ankle |
| Positive compression test | Symptoms with ankle pressure |
| Sensory changes | Decreased sensation on sole |
| Weakness | May have intrinsic foot weakness |
Clinical Assessment
Key Questions:
- Pain Location: Where exactly does it hurt?
- Quality: Burning, tingling, shooting?
- Triggers: What makes it worse?
- Timing: Worse with activity? At night?
- Previous Injuries: Any ankle trauma?
- Medical Conditions: Diabetes, arthritis?
- Footwear: What shoes do you wear?
Palpation:
- Tarsal tunnel
- Surrounding structures
Special Tests:
- Tinel's sign
- Compression test
- Sensory testing
- Motor testing
Diagnostics
X-Ray:
- Rule out bone abnormalities
- Assess for spurs
MRI:
- Evaluate soft tissues
- Identify space-occupying lesions
- Assess nerve
EMG/NCS:
- Confirm nerve compression
- Rule out neuropathy
Differential Diagnosis
| Condition | Key Features |
|---|---|
| Plantar fasciitis | Heel pain, worse with first steps |
| Morton's neuroma | Interdigital burning, clicking |
| Peripheral neuropathy | Symmetric, stocking distribution |
| Radiculopathy | Back-related leg symptoms |
Conventional Treatments
1. Activity Modification:
- Rest
- Avoid aggravating activities
- Proper footwear
2. Orthotics:
- Arch supports
- Medial heel wedge
- Custom orthotics
3. Medications:
- NSAIDs
- Neuropathic pain medications
4. Physical Therapy:
- Nerve gliding exercises
- Stretching
- Strengthening
Indications:
- Failed conservative treatment
- Significant nerve compression
- Progressive symptoms
Procedure:
- Tarsal tunnel release
- Decompression of nerve
Integrative Treatments
Symptomatic:
- Hypericum: Nerve pain
- Arnica: Trauma
- Ruta graveolens: Tendon/nerve
Constitutional:
- Individualized
Approach:
- Vata-pacifying
- Nerve-nourishing herbs
- Local treatments
Nerve Gliding:
- Specific exercises
- Gradual progression
- Home program
Self Care
- Rest when painful
- Avoid tight footwear
- Use ice if inflamed
- Supportive shoes
- Avoid flats
- Consider orthotics
Prevention
- Proper footwear
- Appropriate warm-up
- Address biomechanical issues
When to Seek Help
Prompt Evaluation If:
- Severe pain
- Progressive weakness
- No improvement with rest
- Uncertainty about diagnosis
Prognosis
Expected Outcomes
- Most improve with conservative care
- Early treatment leads to better outcomes
- Surgery has good success rates
FAQ
Treatment includes rest, ice, orthotics, physical therapy, and sometimes medication. Surgery is reserved for cases not responding to conservative care.
No. They are different conditions, though they can occur together. Plantar fasciitis causes heel pain, while tarsal tunnel causes burning/sensory symptoms on the sole.
Last Updated: March 2026 Content Author: Healers Clinic Medical Team Medical Disclaimer: This content is for educational purposes only.