Leg Length Discrepancy: Dynamic Balance Response during Gait

Table 1

The value of optimal cutoff through ROC curve for RMS COP-COM distance.

(a) Cutoff at the long leg in AP direction
Normal gait/LLD (cm)
Variables	0.0	0.5	1.0	1.5	2.0	2.5	3.0	3.5	4.0
Sensitivity	0.389	0.663	0.112	0.774	0.445	0.282	0.332	0.334	0.332
1-specificity	0.276	0.668	0.054	0.495	0.276	0.168	0.163	0.221	0.165
Cutoff	0.161	0.148	0.146	0.150	0.168	0.172	0.178	0.177	0.182
(b) Cutoff at the short leg in AP direction
Normal gait/LLD (cm)
Variables	0.0	0.5	1.0	1.5	2.0	2.5	3.0	3.5	4.0
Sensitivity	0.608	0.556	0.835	0.663	0.500	0.558	0.497	0.445	0.448
1-specificity	0.727	0.163	0.665	0.224	0.278	0.384	0.447	0.221	0.333
Cutoff	0.161	0.148	0.142	0.161	0.161	0.166	0.165	0.168	0.171
(c) Cutoff at the long leg in ML direction
Normal gait/LLD (cm)
Variables	0.0	0.5	1.0	1.5	2.0	2.5	3.0	3.5	4.0
Sensitivity	0.500	0.608	0.498	0.781	0.608	0.500	0.779	0.946	0.611
1-specificity	0.331	0.495	0.165	0.323	0.442	0.276	0.500	0.500	0.389
Cutoff	0.080	0.069	0.071	0.080	0.080	0.083	0.094	0.095	0.091
(d) Cutoff at the short leg in ML direction
Normal gait/LLD (cm)
Variables	0.0	0.5	1.0	1.5	2.0	2.5	3.0	3.5	4.0
Sensitivity	0.445	0.278	0.889	0.889	0.893	0.889	0.778	0.777	0.666
1-specificity	0.444	0.167	0.775	0.889	0.792	0.778	0.833	0.889	0.611
Cutoff	0.083	0.076	0.103	0.105	0.107	0.105	0.106	0.103	0.097