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Table 3 Lower extremity muscle weakness of study knee and physical function scores in participants with knee osteoarthritis

From: Physical examination findings and their relationship with performance-based function in adults 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]

  1. Muscle weakness defined as a Manual Muscle Test grade of ≥ 4 on scale from 0 to 5
  2. Data is provided for all subjects who completed the test
  3. aThe test measures the time taken to complete 10 full stands from a sitting position as fast as possible
  4. bThe 6-min walk test measures the distance covered during the 6-min walk
  5. cThe Berg Balance Scale assessed balance during performance of 14 functional tasks, range from 0 to 56 and higher scores indicate better balance
  6. d20 m walk test is the total time it takes to walk 20 m