Table 5.
Gait cycle assessment, isolating unilateral data from the limb receiving TKA
| Variable | MR | SR | P value* |
|---|---|---|---|
| Length of step asymmetry, unipodal (% of contralateral length of step)† | 14.4 (44.6) | 5.3 (26.6) | 0.345 |
| Time of support, unipodal (% of unipodal support versus normal)‡ | 7.2 (7.02) | 5.4 (8.3) | 0.354 |
| Time of support asymmetry, unipodal (% decrease of contralateral foot support)† | 2.7 (5.5) | 0.8 (4.3) | 0.146 |
| Swing asymmetry (% increase of swing in the contralateral limb)‡ | 7.2 (10.8) | 8.3 (5.7) | 0.627 |
| Speed of advance, contralateral limb (% speed of normal values in early swing)‡ | 32.17 (12.7) | 39.6 (12.9) | 0.013 |
| Speed of return, contralateral limb (% speed of normal values in late swing)‡ | 60.13 (7.8) | 65.20 (7.4) | 0.018 |
| Walking performance (% decrease of normal gait speed)‡ | 28.9 (14.9) | 33.6 (16.8) | 0.257 |
| Stride length (% decrease of normal stride length)‡ | 17.03 (11.7) | 21.40 (13.2) | 0.184 |
| Cadence (% decrease of normal gait cadence)‡ | 15.3 (11.9) | 17.5 (10.6) | 0.444 |
Values are expressed as mean, with SD in parentheses; *Student’s t test for the comparison between MR and SR; †contralateral values were obtained for each patient; ‡normal values to obtain the percentages included in the system and provided by the manufacturer; MR = patients receiving the multiradius design; SR = patients receiving the single-radius design.