A set of 100 patients previously diagnosed with plantar fasciitis will be given initial questionnaires about their symptoms and randomly assigned either night splints or the novel calf stretching device. The participants will use each device for 6 weeks. At the end of those 6 weeks, they will return for a follow up questionnaire. The answers in the questionnaire will be analyzed to compare the effectiveness of night splints to calf stretching.

The attached recruitment flyers will be distributed to physician's offices, and possibly placed as an ad in the newspaper. Potential participants will call the enclosed number and an appointment will be arranged to be evaluated at our research facility in Carterville, IL. During their initial evaluation which will take 30 minutes to 1 hour, each participant will complete medical history pertinent to plantar fasciitis and questionnaires regarding symptoms and physical activity. The research participants will then stand on the AcuFlex™ device for 5 minutes during which time their triceps surae flexibility will be assessed by measuring the distance from their heel to the platform at the 30-degree setting. Measurements for each foot will be taken with a distance sensor every 5 seconds for a 5 minute period.

We will then use a random number generator program from www.random.org to generate a number between 1 and 100. Participants with an odd number will be assigned home use of a United Ortho fitted night splint. Those with an even number will be provided with an AcuFlex™ unit to be used at home a minimum of 5 minutes 2-3 times per day. If at any point the number generator fills maximum participants (50) for either AcuFlex™ or night splints, the remaining participants will automatically be assigned the remaining method of home therapy.

The participants will use their device for 6 weeks. They will receive a check-in phone call at the 3 week mark of their participation.

Contact numbers will be given to each participant should they have any questions or concerns during the six-week interval. Each participant will be asked to maintain a daily log of their pain level on a visual analog scale and of their estimated time using each device.

Participant's random number will be used to link data in the study to the participant. We will not be using patient identifiable information such as name, date of birth, medical record number, or other personal information for the record.

Inclusion Criteria:

• age 18 years and older
• diagnosis of plantar fasciitis
• ability to understand the purpose of the study
• ability to safely use the device they are assigned after education and return demonstration.

Exclusion Criteria:

• patients with ankle fusion
• significant balance impairment which would prohibit safe use of the AcuFlex device
• corticosteroid injection within last 60 days
• pregnancy

All data that underlie a publication will be shared.

Data will become available 6 months after study publication. Data will remain available indefinitely.

Dr. Davis will review requests to access study data on a case by case basis. All deidentified data from this study has potential to be shared with other researchers. Requests can be made via email to james.m.davis1@siu.edu.