Management of Plantar Fasciitis
Begin with patient education, plantar fascia-specific stretching exercises, and ice massage, as these conservative measures form the foundation of treatment with 90% of patients improving within 12 months. 1, 2
Initial Conservative Management (First 6-12 Weeks)
First-Line Interventions
- Plantar fascia-specific stretching exercises should be prescribed immediately, as they have demonstrated limited but consistent evidence of benefit 3
- Ice massage applied to the medial plantar heel for 10-15 minutes reduces acute inflammation 1
- NSAIDs for pain control during the initial inflammatory phase 1, 2
- Activity modification including rest from aggravating activities, particularly prolonged standing and running 1
Adjunctive Physical Therapy Measures
- Gastrocnemius-soleus complex stretching combined with plantar fascia cross-friction massage shows the greatest overall improvement in pain reduction and ankle dorsiflexion range of motion 4
- Soft plantar insoles have limited evidence of benefit but are low-cost and easy to implement 3
- Physical activity should be maintained within pain tolerance, as complete immobilization is counterproductive 5
Second-Line Interventions (If No Improvement After 6-12 Weeks)
Corticosteroid Injections
- Local corticosteroid injections provide short-term benefit (limited evidence) when conservative measures fail 3
- Inject at the point of maximal tenderness on the medial plantar calcaneal region 1
- Caution: Risk of plantar fascia rupture with repeated injections; limit to 2-3 injections maximum
Advanced Physical Therapy
- Night splinting maintains ankle dorsiflexion overnight, though evidence does not show benefit over placebo 2
- Foot orthotics (custom or prefabricated) have not consistently demonstrated superiority over placebo but may be tried 2
- Iontophoresis with steroids shows limited evidence of transient benefit 3
Diagnostic Imaging Considerations
When to Image
- Obtain weightbearing radiographs if diagnosis is unclear or symptoms persist beyond 3 months despite treatment to exclude calcaneal stress fractures, tarsal tunnel syndrome, or other pathology 6
- Ultrasound is the preferred initial advanced imaging modality with 80% sensitivity and 88% specificity; look for plantar fascia thickness >4mm, abnormal focal echogenicity, and perifascial edema 5, 6
- MRI is the most sensitive imaging study and should be reserved for recalcitrant cases or when diagnosis remains uncertain after ultrasound 5, 6
Refractory Plantar Fasciitis (>6 Months)
Tertiary Interventions
- Extracorporeal shock wave therapy (ESWT) can be considered when other techniques have failed, though evidence quality is limited 7, 2
- Endoscopic plantar fasciotomy may be required in patients with persistent pain limiting activity and function despite exhausting all nonoperative options 2
Critical Pitfalls to Avoid
- Do not over-rely on imaging findings alone: MRI findings of plantar fasciitis can be present in asymptomatic patients; always correlate with clinical symptoms 5
- Avoid multiple corticosteroid injections: Risk of plantar fascia rupture increases significantly with repeated injections
- Do not prescribe complete rest: Encourage modified activity and stretching rather than complete immobilization 5
- Address modifiable risk factors: Obesity, excessive foot pronation, and prolonged standing must be addressed for long-term success 1
Psychosocial Considerations
- Screen for psychological factors including fear of movement, catastrophizing cognitions, or depression that may impede recovery 5
- Refer to multidisciplinary treatment if psychosocial factors interfere with effective pain management, combining cognitive-behavioral therapy with physical interventions 5
- Assess sleep disturbance and provide sleep hygiene education, as poor sleep exacerbates chronic pain 5
Treatment Algorithm Summary
- Weeks 0-6: Stretching (plantar fascia + gastrocnemius-soleus), ice massage, NSAIDs, activity modification, soft insoles 1, 4, 3
- Weeks 6-12: Add physical therapy modalities, consider corticosteroid injection if severe pain 1, 3
- Month 3: Obtain imaging (radiographs, then ultrasound) if no improvement 6, 2
- Months 6-12: Consider ESWT for recalcitrant cases 7, 2
- Beyond 12 months: Surgical consultation for endoscopic fasciotomy if all conservative measures exhausted 2