Table 1

 Results of static tests

Preoperative test Median (Q1, Q3)Postoperative test Median (Q1, Q3)Significance (Wilcoxon z and p values)
AP, anterior–posterior; EC, eyes closed; EO, eyes open; Lat, lateral; NS, no significant; Q1, first quartile; Q3, third quartile.
EO condition
    Sway path2.00 (1.25, 2.53)1.33 (0.55, 1.90)z = −2.197; p = 0.028
    Area1.32 (0.45, 2.53)0.34 (0.24, 1.24)z = −2.510; p = 0.012
    AP sways0.30 (0.20, 0.58)0.31 (0.17, 0.47)z = −0.533; NS
    Lateral sways0.17 (0.08, 0.26)0.09 (0.06, 0.11)z = −2.039; p = 0.042
EC condition
    Sway path2.37 (1.55, 5.85)1.70 (1.37, 2.01)z = −2.589; p = 0.010
    Area1.77 (0.73, 4.01)0.56 (0.43, 1.09)z = −2.589; p = 0.010
    AP sways0.44 (0.34, 0.84)0.44 (0.35, 0.52)z = −0.981; NS
    Lateral sways0.15 (0.09, 0.24)0.08 (0.07, 0.12)z = −2.667; p = 0.008