Published online by Cambridge University Press: 02 November 2023
Plantar fasciitis (PF) is the most common cause of chronic heel pain, predominantly impacting those who perform heavy footwork, are avid runners or lare ong-distance walkers. Overuse injury leads to repetitive microtears of the plantar fascia near the calcaneus, irritating pain fibers and producing secondary inflammation. Patients typically have intense heel pain, described as aching, jabbing or burning. Pain usually starts with the first few steps in the morning and is reproduced by palpation of the median tubercle of the calcaneum and with dorsiflexion of the toes.
Conventional treatments such as ice, heel cup orthoses, deep-tissue massage and night splints, periods of immobilization and stretching/strengthening exercise programs can reduce pain satisfactorily. Persistent discomfort may respond to treatments such as ultrasound, iontophoresis and phonophoresis. More severe and recalcitrant cases require extracorporeal shock wave therapy (ECSWT) or local corticosteroid injections. When medical approaches fail, surgery is advocated but can only offer modest results.
This chapter reviews pertinent studies to date on the application of botulinum neurotoxin to plantar fasciitis, and discusses injection technique and dosing, including the WRAMC–Yale technique for injecting the soleus muscle, along with the plantar fascia. Clear anatomical illustrations are provided.
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