Table 3.
Lower extremity muscle weakness of study knee and physical function scores in participants with knee osteoarthritis
| Variable | |
|---|---|
| Hip flexor/extensor weakness, n (%) (n = 87/86) | 46 (53) / 46 (53) |
| Hip abductor/adductor weakness, n (%) (n = 87/86) | 52 (60) / 48 (56) |
| Hip internal/external rotator weakness, n (%) (n = 86/85) | 17 (20) / 20 (24) |
| Knee flexor/extensor weakness, n (%) (n = 87/87) | 37 (43) / 21 (24) |
| Ankle invertor/evertors weakness, n (%) (n = 87/87) | 8 (9) / 8 (9) |
| Ankle dorsiflexor/plantarflexor weakness, n (%) (n = 87/87) | 10 (11) / 8 (9) |
| Mean Timed Chair Standa, seconds (SD) [range] (n = 78) | 31 (11) [10–69] |
| Mean 6-min walkb, meters (SD) [range] (n = 84) | 404 (83) [202–645] |
| Mean Berg Balance scorec (SD) [range] (n = 87) | 53 (4) [35–56] |
| Mean time 20 m walkd, seconds (SD) [range] (n = 87) | 18 (3) [10–32] |
Muscle weakness defined as a Manual Muscle Test grade of ≥ 4 on scale from 0 to 5
Data is provided for all subjects who completed the test
aThe test measures the time taken to complete 10 full stands from a sitting position as fast as possible
bThe 6-min walk test measures the distance covered during the 6-min walk
cThe Berg Balance Scale assessed balance during performance of 14 functional tasks, range from 0 to 56 and higher scores indicate better balance
d20 m walk test is the total time it takes to walk 20 m