Inclusion Criteria for Group A:  Patients presenting to the University of Florida Orthopaedics and Sports Medicine Institute with pain on the plantar medial or central heel for greater than 60 days with the following features Pain upon palpation, or insidious pain onset Pain accentuated after long periods of weight bearing activities or after periods of rest A reduction in pain following light activities (McPoil et al., 2008) Failure to respond to treatment modalities for 6 months, including plantar fascia and muscle stretching, nonsteroidal anti-inflammatory medication, supportive insoles, and night splints Age >18 years  Inclusion Criteria for Group B:  Healthy individuals in the general population of Gainesville and surrounding areas Age >18  Exclusion Criteria for Group A:  History of lower leg or foot surgery, hindfoot trauma or fracture of the affected limb within the previous year. Diagnosis of diabetic neuropathy, fibromyalgia, neurological disease, Achilles tendinopathy, metatarsalgia, tarsal tunnel syndrome or heel pad syndrome Body Mass Index (BMI) > 35 Currently taking or applying any anti-inflammatory medication or medication to control nerve pathology, prescription or over the counter Third trimester pregnancy  Exclusion Criteria for Group B:  Any foot or lower limb pathology resulting in discomfort or gait limitation Diagnosis of diabetic neuropathy, fibromyalgia, neurological disease BMI >35 Currently taking or applying any anti-inflammatory medication or medication to control nerve pathology, prescription or over the counter Third trimester pregnancy