Table 2.
Means (SD) of outcome measures by sex at baseline and 1, 3, and 6 months post-TKA. Differences between sexes (women-men) are represented as mean difference (95% confidence intervals [CI]) at baseline and 1, 3, and 6 months post-TKA. Quads=quadriceps muscle; Hams=hamstrings muscle. N indicates the number of patients (men and women) tested on each measure at each timepoint.
| Baseline | 1 month | 3 months | 6 months | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Men | Women | Differences Women-Men (95% CI) | Men | Women | Differences Women-Men (95% CI) | Men | Women | Differences Women-Men (95% CI) | Men | Women | Differences Women-Men (95% CI) | |
| Quads Strength (N-m/kg) | 1.54 (0.51) | 1.00 (0.40) | −0.54 (−0.64, 0.43) | 0.90 (0.36) | 0.65 (0.26) | −0.24 (−0.32, −0.17)* | 1.42 (0.47) | 1.03 (0.29) | −0.39 (−0.49, −0.30)* | 1.61 (0.46) | 1.17 (0.32) | −0.44 (−0.54, −0.34)* |
| N=299 | N=283 | N=272 | N=263 | |||||||||
| Hams Strength (N-m/kg) | 0.92 (0.28) | 0.61 (0.21) | −0.30 (−0.36, −0.25)* | 0.64 (0.24) | 0.43 (0.18) | −0.21 (−0.26, −0.16)* | 0.90 (0.25) | 0.61 (0.19) | −0.29 (−0.34, −0.23)* | 0.97 (0.26) | 0.65 (0.19) | −0.33 (−0.38, −0.27)* |
| N=299 | N=281 | N=272 | N=263 | |||||||||
| Quads Activation (%) | 74.23 (15.78) | 71.88 (17.47) | −2.35 (−6.34, 1.63) | 72.46 (19.82) | 74.74 (18.12) | 2.28 (−2.53, 7.08) | 82.76 (12.14) | 83.66 (12.03) | 0.89 (−2.18, 3.96) | 82.55 (12.80) | 84.91 (9.94) | 2.37 (−0.62, 5.36) |
| N=270 | N=245 | N=242 | N=233 | |||||||||
| TUG (s) | 8.38 (2.58) | 9.54 (3.46) | 1.17 (0.47, 1.87)* | 10.43 (3.39) | 12.27 (4.94) | 1.84 (0.85, 2.83)* | 7.55 (1.90) | 8.44 (2.29) | 0.90 (0.39, 1.40)* | 7.14 (1.62) | 7.90 (2.00) | 0.75 (0.31, 1.20)* |
| N=293 | N=278 | N=270 | N=258 | |||||||||
| SCT (s) | 15.10 (7.75) | 20.94 (11.86) | 5.84 (3.58, 8.10)* | 24.65 (15.08) | 32.55 (15.64) | 7.90 (4.24, 11.55)* | 12.60 (4.62) | 16.23 (7.15) | 3.63 (2.22, 5.05)* | 11.28 (3.53) | 14.52 (6.82) | 3.24 (1.93, 4.54)* |
| N=295 | N=277 | N=272 | N=257 | |||||||||
| 6MWT (m) | 466.73 (106.11) | 430.53 (114.04) | −36.20 (−61.73, −10.66)* | 398.57 (100.41) | 341.00 (98.59) | −57.57 (−81.73, −33.41)* | 500.73 (93.04) | 454.61 (94.86) | −46.12 (−68.72, −23.52)* | 525.14 (87.51) | 481.69 (92.01) | −43.45 (−65.63, −21.26)* |
| N=289 | N=269 | N=270 | N=255 | |||||||||
*
Indicates confidence intervals that exclude 0.