Table 3.
Comparison of plantar pressure and shear stress variables adjusted for mass between subjects with callus and subjects without callus under the metatarsal head.
| With callus (n = 9) | Without callus (n = 41) | P value | ||
|---|---|---|---|---|
| Pressure | ||||
| Maximum peak pressure, (/m2), mean ± SD | n = 8 | 855 ± 415 | 748 ± 281 | .370 |
| Maximum mean pressure, (/m2), mean ± SD | n = 8 | 266 ± 105 | 272 ± 76 | .860 |
| Pressure-time integral, (s), mean ± SD | n = 8 | 0.27 ± 0.10 | 0.29 ± 0.08 | .431 |
| Shear stress | ||||
| Peak-to-peak shear, mean ± SD | n = 9 | 0.0500 ± 0.0160 | 0.0380 ± 0.0144 | .031* |
| Posterior peak shear, mean ± SD | n = 9 | –0.0404 ± 0.0090 | –0.0322 ± 0.0125 | .069 |
| Anterior peak shear, mean ± SD | n = 9 | 0.0109 ± 0.0078 | 0.0074 ± 0.0029 | .220 |
t-test.
*
P < .05.