Table 1: Significant differences in pressure metrics between tarsal coalition subjects and normal subjects. (Mean ± SD, P < 0.05).
| Parameters | Coalition | Normal | p-value |
| Contact Area (cm2) | |||
| Lateral-heel | 21.1 ± 7.3 | 13.6 ± 5.7 | P < 0.0001 |
| Medial-heel | 18.6 ± 6.5 | 12.2 ± 3.1 | P < 0.0001 |
| Mid-foot | 33.6 ± 14.0 | 19.8 ± 10.9 | P < 0.0001 |
| 5th Metatarsal | 9.5 ± 3.1 | 5.3 ± 1.5 | P = 0.0001 |
| 1st Metatarsal | 10.7 ± 2.1 | 8.1 ± 2.4 | P < 0.0001 |
| Peak Pressure (N/cm2) | |||
| Mid-foot | 18.7 ± 8.2 | 10.7 ± 5.5 | P < 0.0001 |
| 5th Metatarsal | 24.8 ± 18.0 | 14.0 ± 11.3 | P = 0.0011 |
| 1st Metatarsal | 28.0 ± 10.6 | 16.8 ± 9.3 | P < 0.0001 |
| Hallux | 47.4 ± 24.0 | 27.0 ± 14.9 | P < 0.0001 |
| Instant of Peak Pressure [%ROP] | |||
| 1st Metatarsal | 82.3 ± 5.4 | 70 ± 14.9 | P = 0.0001 |
| Hallux | 88.6 ± 5.9 | 81.5 ± 9.6 | P = 0.0001 |
| Pressure-time Integrals [(N/cm2) × s] | |||
| Lateral-heel | 9.2 ± 3.0 | 5.3 ± 5.5 | P < 0.0001 |
| Medial-heel | 9.8 ± 3.2 | 5.8 ± 5.7 | P < 0.0001 |
| Mid-foot | 6.7 ± 2.7 | 3.8 ± 12.3 | P < 0.0001 |
| 5th Metatarsal | 7.7 ± 5.2 | 4.2 ± 8.3 | P < 0.0001 |
| 3rd Metatarsal | 10.4 ± 4.4 | 7.1 ± 8.6 | P = 0.0004 |
| 1st Metatarsal | 8.0 ± 3.4 | 5.4 ± 8.3 | P < 0.0001 |
| Hallux | 9.7 ± 5.2 | 6.5 ± 9.1 | P = 0.0014 |