The Effects of Terrain Variation on Intrinsic Foot Musculature in Healthy Individuals and Individuals With Plantar Fasciitis

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