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. 2022 Jun 12;143(4):2141–2151. doi: 10.1007/s00402-022-04487-1

Table 2.

Results of functional tests

Measured resection Gap balancer
Functional test Mean (95% CI) Mean (95% CI) Mean difference (95% CI) p-value
Peak quadriceps torque (N)
 Pre-op 40.79 (33.44–48.13) 50.24 (42.81–57.66) – 9.45 (– 19.90 to 0.99) 0.075
 6 weeks 40.41 (35.34–45.47) 41.90 (36.95–46.85) – 1.50 (– 8.58 to 5.58) 0.675
 3 months 51.42 (44.43–58.40) 57.46 (50.48–64.44) – 6.04 (– 15.92 to 3.83) 0.227
 6 months 60.92 (53.45–68.39) 63.67 (56.38–70.96) – 2.75 (– 13.19 to 7.69) 0.601
 1 year 69.13 (59.79–78.46) 72.48 (63.37–81.59) – 3.35 (– 16.39 to 9.69) 0.610
Peak hamstring torque (N)
 Pre-op 26.35 (22.09–30.61) 37.54 (33.23 – 41.85) – 11.19 (– 17.24 to – 5.13)  < .0001
 6 weeks 28.13 (24.84–31.42) 29.34 (26.09–32.59) – 1.21 (– 5.83 to 3.41) 0.605
 3 months 34.03 (30.56–37.50) 36.30 (32.83–39.77) – 2.27 (– 7.18 to 2.64) 0.361
 6 months 39.12 (34.56–43.68) 39.41 (34.91–43.92) – 0.29 (– 6.71 to 6.12) 0.927
 1 year 43.59 (39.17–48.01) 44.08 (39.77–48.39) – 0.49 (– 6.66 to 5.68) 0.875
Wii Fit Balance
 Pre-op 68.89 (63.71–74.08) 67.45 (62.26–72.63) 1.45 (– 5.89 to 8.78) 0.696
 6 weeks 65.07 (59.24–70.89) 71.27 (65.51–77.02) – 6.20 (– 14.39 to 1.99) 0.136
 3 months 71.95 (67.38–76.53) 74.20 (69.68–78.72) – 2.25 (– 8.68 to 4.18) 0.488
 6 months 77.41 (74.32–80.50) 76.02 (73.08–78.96) 1.39 (– 2.88 to 5.65) 0.519
 1 year 75.13 (71.07–79.18) 74.76 (70.81–78.72) 0.36 (– 5.30 to 6.03) 0.899
Timed up and go (s)
 Pre-op 14.09 (12.03–16.14) 12.55 (10.49–14.61) 1.54 (– 1.37 to 4.45) 0.297
 6 weeks 12.09 (10.22–13.96) 12.50 (10.63–14.37) – 0.41 (– 3.06 to 2.24) 0.759
 3 months 10.45 (9.10–11.81) 10.47 (9.13–11.81) – 0.02 (– 1.92 to 1.89) 0.984
 6 months 10.50 (8.43–12.56) 9.94 (7.95–11.93) 0.55 (– 2.31 to 3.42) 0.702
 1 year 10.62 (8.99–12.26) 9.16 (7.56–10.75) 1.46 (– 0.82 to 3.75) 0.205
6-min walk test (m)
 Pre-op 238.74 (202.6–274.8) 263.45 (227.3–299.5) – 24.70 (– 75.73 to 26.32) 0.339
 6 weeks 266.24 (228.8–303.6) 298.80 (261.3–336.2) – 32.56 (– 85.46 to 20.35) 0.225
 3 months 334.82 (291.9– 377.6) 360.02 (317.6–402.4) – 25.20 (– 85.48 to 35.07) 0.408
 6 months 367.33 (325.2– 409.4) 378.19 (337.5–418.8) – 10.85 (– 69.39 to 47.69) 0.713
 1 year 358.48 (316.4– 400.4) 389.40 (348.4– 430.4) – 30.93 (– 89.63 to 27.77) 0.298
Timed stairs (s)
 Pre-op 32.01 (21.12–42.91) 23.12 (12.22–34.01) 8.90 (– 6.51 to 24.30) 0.254
 6 weeks 24.45 (20.30–28.60) 24.50 (20.36–28.65) – 0.05 (– 5.92 to 5.81) 0.986
 3 months 17.71 (13.84–21.58) 19.37 (15.55–23.20) – 1.66 (– 7.10 to 3.78) 0.545
 6 months 16.90 (13.77–20.03) 16.58 (13.57–19.60) 0.32 (– 4.03 to 4.66) 0.885
 1 year 16.46 (13.75–19.17) 14.10 (11.46–16.75) 2.35 (– 1.44 to 6.14) 0.220

The scores were analysed by means of Analysis of Variance (ANOVA)