Primus Metatarsus Supinatus Foot:  (1) 0 N/cm2 under the 1st metatarsal head and almost no pressure under the hallux (due to the structurally inverted and elevated 1st metatarsal and hallux), (2) transfer of body’s weight (red line) more lateral

Normal plantargrade foot:  (1) plantar pressure is spread fairly evenly across metatarsal heads I-IV (10 N/cm2), the hallux is weight bearing (1-6 N/cm2), (2) transfer of body’s weight (red line) more central

  Static (Standing) Pressure Plate Analysis of the Primus Metatarsus Supinatus foot

  Cuernavaca Study

Dynamic Pressure Plate Analysis (at Midstance) - Plantargrade (Normal) Foot vs Primus Metatarsus Supinatus foot