During activity, a certain degree of foot pronation is necessary for normal lower extremity mobility. To accommodate for this individual specific degree of "normal" foot pronation and simultaneously prevent over pronation, the Vasyli McPoil Tissue Stress Relief Orthotic incorporates a dual density design that achieves both functional control and excellent compliance. The dual-density, total arch contact principle of the Vasyli McPoil foot orthotic design is applicable in the treatment regimes of both athletes and non-athletes with lower extremity conditions such as: anterior knee pain, medial tibial stress syndrome, posterior tibialis tendinopathy, chronic plantar heel pain ("plantar fasciitis/fasciosis"), general arch pain, and mid-foot pain.