What is heel expansion in orthotic device?
1- additional material or space built into the heel cup of the orthotic to accommodate the natural expansion or bulging of the heel’s fat pad when a person stands.
2-Heel expansion is typically achieved by adding plaster or other material to the heel area of the cast from which the orthotic is made. This creates a slightly wider and deeper heel cup in the final orthotic device.
1st ray plantar fascia accommodation
should be acurate otherwise it may cause more irritation. also it stiffen ups the shell. so more irritation if not placed correctly
1st ray accommoddation and 1st ray cut out