Posterior Tibial Nerve PRF vs Intralesional RFT for Painful Calcaneal Spur and Plantar Fasciitis

Inclusion Criteria: * Heel pain for at least 6 months consistent with clinical examination and imaging methods * Numeric rating scale (NRS) in the first few steps in the morning ≥ 6 * Plantar fascia thicker than 4 mm as measured by ultrasonography * Demonstration of calcaneal spur by X-ray * Non-response to at least two of the indicated conservative treatments (rest, stretching exercises, oral anti-inflammatory drugs, silicone heel cup, local steroid injection, extracorporeal shock wave therapy (ESWT)) Exclusion Criteria: * Achilles tendinopathy or calcaneal fracture * Inflammatory or degenerative arthritis * Spondyloarthropathies * Tarsal tunnel syndrome (confirmed by electromyography if clinically suspected) * Previous surgery on the plantar fascia or heel * Diabetes mellitus, peripheral neuropathies, peripheral ischemic disease * History of malignancy, pregnancy * Anticoagulant-anticoaggregant drug use or coagulopathy