Medical use of foot orthoses has been criticized as lacking evidence of benefit, and practice is very inconsistent: reputed podiatrists prescribe completely different orthoses for a single patient.[1][2][3] Further, effect of a given design of orthosis varies significantly by patient,[4] and standard practice to personalize prescription is not available.[5] However, evidence is mixed: patients often report at least short-term improvements in comfort, and other studies have found effectiveness.[6]