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Table 2 WOMAC scores and mobility test performances [median (interquartile range)]

From: Pain, balance, and mobility in people 1 year after total knee arthroplasty: a non-randomized cross-sectional pilot study contrasting posterior-stabilized and medial-pivot designs

  PS-TKA
(n = 20)
MP-TKA
(n = 18)
Controls
(n = 19)
K-W PS-TKA vs
MP-TKA
PS-TKA vs Controls MP-TKA vs Controls
p value p value ES p value ES p value ES
WOMAC–pain
(out of 21)
2.37 (1.50 to 4.59) 2.35 (0.35 to 4.37) 0.00 (0.00 to 0.20)  < 0.001* 0.632  − 0.05  < 0.001  − 0.54 0.002  − 0.42
WOMAC–stiffness (out of 8) 1.74 (1.07 to 4.03) 1.06 (0.61 to 3.01) 0.00 (0.00 to 0.10)  < 0.001 0.360  − 0.30  < 0.001  − 0.59 0.001  − 0.54
WOMAC–physical function (out of 71) 14.90 (3.88 to 24.90) 7.40 (4.76 to 13.72) 0.40 (0.00 to 1.60)  < 0.001* 0.560  − 0.20  < 0.001  − 0.62  < 0.001  − 0.55
WOMAC–total score 19.12 (8.53 to 30.20) 10.44 (7.10 to 17.49) 0.80 (0.00 to 2.50)  < 0.001* 0.577  − 0.20  < 0.001  − 0.60  < 0.001  − 0.56
6MWT distance (m) 330.26
(284.96 to 356.70)
321.94
(254.62 to 372.96)
382.42
(359.33 to 459.40)
 < 0.001* 0.876  − 0.02  < 0.001  − 0.50  < 0.001  − 0.52
TUG time (s) 11.87 (10.06 to 15.40) 13.93 (10.97 to 15.18) 11.62 (10.00 to 12.94) 0.011* 0.739  − 0.04 0.055  − 0.09 0.019  − 0.52
  1. ES effect size, K-W Kruskal–Wallis test, MP-TKA medial-pivot total knee arthroplasty, PS-TKA posterior-stabilized total knee arthroplasty, TUG timed-up-and-go test, WOMAC Western Ontario and McMaster Universities Osteoarthritis Index, 6MWT six-minute walk test
  2. *Denotes significant difference at p < 0.05 using Kruskal–Wallis test
  3. Denotes significant difference from control at p < 0.05/3 using Mann–Whitney U test with Bonferroni adjustment