Table 2. Change in strength capacity compared with baseline examination (M1 = 6 weeks after surgery)*.

	6 months (ΔM2–M1)					12 months (ΔM3–M1)
	Intervention	Control	Effect r	p value	adjusted p value	Intervention	Control	Effect r	p value	adjusted p value
Operated leg
Extension	0.69	0.55	0.12	0.171	1.000	0.86	0.93	0.01	0.956	1.000
	(0.44; 0.96)	(0.06; 0.79)				(0.46; 1.11)	(0.42; 1.07)
Flexion	0.31	0.26	0.12	0.188	1.000	0.55	0.42	0.15	0.077	0.616
	(0.19; 0.43)	(0.09; 0.35)				(0.31; 0.69)	(0.31; 0.58)
Abduction	0.18	0.13	0.21	0.014	0.112	0.22	0.20	0.11	0.201	1.000
	(0.09; 0.26)	(0.04; 0.17)				(0.16; 0.30)	(0.12; 0.24)
Adduction	0.17	0.14	0.11	0.206	1.000	0.23	0.19	0.09	0.291	1.000
	(0.09; 0.29)	(0.03; 0.24)				(0.14; 0.35)	(0.15; 0.28)
Non-operated leg
Extension	0.33	0.26	0.13	0.125	1.000	0.39	0.49	0.09	0.328	1.000
	(0.06; 0.64)	(−0.06; 0.52)				(−0.02; 0.83)	(0.14; 0.72)
Flexion	0.17	0.10	0.15	0.087	0.696	0.23	0.24	0.07	0.425	1.000
	(−0.01; 0.25)	(−0.04; 0.19)				(0.06; 0.38)	(0.08; 0.28)
Abduction	0.08	0.11	0.04	0.612	1.000	0.12	0.10	0.11	0.203	1.000
	(0.02; 0.18)	(0.05; 0.16)				(0.02; 0.20)	(0.04; 0.16)
Adduction	0.08	0.10	0.05	0.558	1.000	0.11	0.18	0.07	0.419	1.000
	(0.00; 0.18)	(0.01; 0.18)				(0.05; 0.23)	(0.08; 0.22)

* In the Intervention and Control columns, the median and, in brackets, the 25^th and 75^th percentiles are listed.

ΔM2-M1, difference of the results of the second and first measurement visit; ΔM3-M1, difference of the results of the third and first measurement visit