The present invention relates to a physical rehabilitation device for the treatment of a medical condition of the foot known as plantar fasciitis. The device is a splint which is connected to the toe and ankle of a patient. The present invention also concerns a method for treating plantar fasciitis known as “dynamic splinting”. The mechanical device may be used in conjunction with the method for treatment of plantar fasciitis. This device allows the patient to bend the ankle and thus dynamically change the flexion in the foot of the patient. The device itself is unique, but the method of treatment made possible by this device is also unique.