Table 4 Mean value and standard deviation of peak torque (Nm) and work (J) per KG body weight preoperatively and 5 days and 4 weeks after surgery with enhanced recovery or conventional setup

Peak torque (Nm) per KG body weight

 60°/s extension

Pre-OP

46.23 (± 24.71)

55.71 (± 41.55)

p = 0.585

5 days post-OP

18.50 (± 9.87)

19.50 (± 10.47)

p = 0.883

4 weeks post-OP

33.51 (± 13.34)

39.54 (± 15.81)

p = 0.197

 180°/s extension

Pre-OP

25.29 (± 17.27)

28.87 (± 32.43)

p = 0.711

5 days post-OP

11.84 (± 11.67)

8.81 (± 12.55)

p = 0.297

4 weeks post-OP

27.05 (± 10.87)

33.02 (± 12.03)

p = 0.095

 60°/s flexion

Pre-OP

27.31 (± 16.42)

31.47 (± 20.97)

p = 0.774

5 days post-OP

12.30 (± 11.80)

6.04 (± 6.42)

p = 0.096

4 weeks post-OP

23.70 (± 10.88)

24.82 (± 12.80)

p = 0.830

 180°/s flexion

Pre-OP

12.69 (± 11.29)

15.57 (± 18.56)

p = 0.904

5 days post-OP

5.49 (± 7.12)

1.93 (± 3.25)

p = 0.072

4 weeks post-OP

12.23 (± 10.29)

14.64 (± 12.20)

p = 0.220

Work (J) per KG body weight

 60°/s extension

Pre-OP

52.83 (± 30.95)

62.27 (± 43.45)

p = 0.453

5 days post-OP

14.11 (± 11.38)

12.36 (± 12.58)

p = 0.376

4 weeks post-OP

31.66 (± 17.29)

38.90 (± 17.43)

p = 0.156

 180°/s extension

Pre-OP

25.95 (± 21.93)

28.96 (± 36.30)

p = 0.636

5 days post-OP

8.07 (± 9.68)

5.78 (± 9.61)

p = 0.237

4 weeks post-OP

25.20 (± 15.96)

31.84 (± 14.36)

p = 0.135

 60°/s flexion

Pre-OP

28.52 (± 18.94)

34.97 (± 24.00)

p = 0.453

5 days post-OP

8.19 (± 9.67)

2.99 (± 3.97)

p = 0.111

4 weeks post-OP

18.45 (± 12.28)

19.88 (± 12.67)

p = 0.731

 180°/s flexion

Pre-OP

9.58 (± 10.99)

15.52 (± 26.32)

p = 0.657

5 days post-OP

3.11 (± 5.05)

0.50 (± 1.09)

p = 0.030

4 weeks post-OP

8.07 (± 11.19)

8.69 (± 9.44)

p = 0.186