Plantar fasciitis is one of the most common causes of heel pain. This study will be performed in the purpose of determination the effects of extracorporeal shock wave therapy of gastrosoleus trigger points in patients with plantar fasciitis

Plantar fasciitis is the most common cause of inferior heel pain, A great variety of therapies have been reported for the treatment of plantar fasciitis including extracorporeal shock wave therapy. Gastrosoleus muscle dysfunction is one of the most common contributing factors to this disease .Despite the long history and the fact that this is a common diagnosis made in clinical practice, the exact cause and best treatment for this condition still are being explored. Although there is lack of high-quality studies demonstrating the efficacy of extracorporeal shock wave therapy of gastrosoleus trigger points in patients with plantar fasciitis , this study will be performed to examine the effect of extracorporeal shock wave therapy of gastrosoleus trigger points in patients with plantar fasciitis

Inclusion Criteria:

1. clinical diagnosis of plantar fasciitis
2. having at least one Gastrosoleus trigger point concomitantly.
3. having no response to conservative treatments for at least 3 months
4. willingness to participate

Exclusion Criteria:

1. Dysfunction of the knee or ankle
2. Neurologic abnormalities
3. Bleeding tendency (hereditary or acquired)
4. Nerve entrapment syndrome
5. A previous operation on the heel
6. Pregnancy
7. Evidences of Infection in lower limbs
8. A medical History of tumor
9. previous local corticosteroid injection within 12 weeks