Results of all tests and conditions for the two subgroups (OP vs no-OP)
| Test | Condition(s) | Mean±SD Surgery | Mean±SD No surgery | P value | Effect size (d) |
| Triangle completion test | Angle | ||||
| All conditions | 69.5±22.9 | 68.9±24.7 | 0.952 | 0.04 | |
| Walk | 77.1±35.6 | 73.0±34.9 | 0.800 | 0.16 | |
| Wheelchair | 61.9±21.4 | 64.5±26.5 | 0.811 | 0.15 | |
| Distance | |||||
| All conditions | 261.8±64.2 | 264.6±66.5 | 0.923 | 0.06 | |
| Walk | 272.3±94.0 | 268.0±96.7 | 0.922 | 0.06 | |
| Wheelchair | 251.2±50.3 | 261.2±58.9 | 0.687 | 0.26 | |
| Rotational memory | All conditions | 45.8±15.2 | 53.8±29.6 | 0.442 | 0.48 |
| One rotation | 34.5±22.9 | 57.5±51.4 | 0.200 | 0.82 | |
| Two rotations | 61.8±42.5 | 49.2±33.5 | 0.477 | 0.47 | |
| Four rotations | 44.5±21.4 | 45.6±29.5 | 0.930 | 0.06 | |
| Eight rotations | 42.3±38.8 | 63.1±55.6 | 0.338 | 0.61 | |
| Clinical balance test | All conditions | 53.8±14.6 | 56.7±8.3 | 0.610 | 0.34 |
| Open eyes | 44.2±11.6 | 46.6±7.8 | 0.608 | 0.34 | |
| Closed eyes | 9.6±3.4 | 10.1±1.9 | 0.713 | 0.24 |
*p<0.05, **p<0.01, ***p<0.001.
OP, operation.