Shear Wave Elastography Technology to Evaluate the Efficacy of ESW in the Treatment of Patients With Chronic Plantar Fasciitis

Inclusion Criteria: 1. Pain at the proximal calcaneal stop of the plantar fascia 2. The pain is severe when waking up in the morning or standing and walking after sitting for a long time, and it is slightly relieved after activities, and it will be aggravated after long walking or standing for a long time 3. Pain time\> 3 months 4. Visual Scoring Scale (VAS)\>4 5. The pain is tingling, sore, or burning, etc 6. There is or no tender point at the bottom of the arch of the foot 7. The patient has not undergone corticosteroid injection therapy or shock wave therapy or surgery 8. X-ray confirmed no calcaneal spurs 9. The patient agrees to participate in this study Exclusion Criteria: 1. Suffering from calcaneal stress fracture, atrophy of fat pad, compression of the little toe abductor nerve (Baxter's nerve), tarsal tunnel syndrome, sciatica, bone or soft tissue tumor, rheumatism or rheumatoid arthritis, rigidity Those with spondylitis and infection 2. those who disagree with and do not understand the treatment methods or methods of the experiment 3. those with mental disorders