TABLE 3.
L9 orthogonal array table (the numbers under design factors indicate the levels assigned to each design factor) and the corresponding FE predicted peak plantar pressures and peak proximal plantar fascia strain for the nine configurations of foot orthosis.
| Trial number | Code | Design factor | Plantar pressure (MPa) | Plantar fascia strain (%) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Arch support | Inclination angle | Heel cup height | Material stiffness | Forefoot | Midfoot | Hindfoot | |||
| A | I | H | M | ||||||
| 1 | A1I1H1M1 | 1 | 1 | 1 | 1 | 0.183 | 0.078 | 0.04 | 2.16 |
| 2 | A1I2H2M2 | 1 | 2 | 2 | 2 | 0.184 | 0.080 | 0.078 | 2.03 |
| 3 | A1I3H3M3 | 1 | 3 | 3 | 3 | 0.188 | 0.096 | 0.092 | 2.11 |
| 4 | A2I1H2M3 | 2 | 1 | 2 | 3 | 0.187 | 0.082 | 0.051 | 2.19 |
| 5 | A2I2H3M1 | 2 | 2 | 3 | 1 | 0.18 | 0.078 | 0.047 | 1.73 |
| 6 | A2I3H1M2 | 2 | 3 | 1 | 2 | 0.168 | 0.109 | 0.02 | 1.85 |
| 7 | A3I1H3M2 | 3 | 1 | 3 | 2 | 0.18 | 0.084 | 0.058 | 1.48 |
| 8 | A3I2H1M3 | 3 | 2 | 1 | 3 | 0.17 | 0.118 | 0 | 2.06 |
| 9 | A3I3H2M1 | 3 | 3 | 2 | 1 | 0.164 | 0.105 | 0 | 1.61 |