Table 2 Intervention and control insoles

Blue Formthotic^TM (Foot Science International)

Blue, medium density (140 kg/m³ single-density, closed-cell polyethylene foam) prefabricated Formthotic^TM which possesses heel and arch support. A first MTP joint cut out is added if tolerated, and a blue 4°medium density varus wedge is added if the Foot Posture Index score is >7.

Blue flat insole (Foot Science International)

Blue, medium density (140 kg/m³ single-density, closed-cell polyethylene foam) 3mm flat insole.