Table 4.

Patient characteristics and baseline measurement

	n	Mean	95%CI
Age (years)	150	64.7	63.4–66.0
Weight (kg). Women	79	84.6	81.2–88.0
Weight (kg). Men	71	95.7	92.5–98.9
Height (m). Women	79	1.66	1.65–1.67
Height (m). Men	71	1.75	1.74–1.77
BMI. Women	79	30.7	29.5–31.9
BMI. Men	71	31.2	30.2–32.2
PSFS1	150	1.9	1.6–1.9
PSFS2	149	2.2	1.9–2.6
PSFS3	138	2.6	1.6–2.3
KSS-knee score	150	52.5	49.8–55.1
KSS-function score	150	57.2	55.1–59.4
SF12-physical	146	33.5	32.2–34.8
SF12-mental	146	44.7	42.9–46.4
Quadriceps Isometric strength 60° (Nm)	147	79.6	73.2–86.0
Quadriceps Isometric strength 30° (Nm)	132	40.1	36.3–43.8
Quadriceps Isokinetic strength 60°/s (Nm)	149	56.6	51.2–62.1
Quadriceps Isokinetic strength 180°/s (Nm)	149	35.9	32.5–39.3
Hamstrings Isometric strength 60° (Nm)	147	56.6	52.2–60.1
Hamstrings Isometric strength 30° (Nm)	132	72.2	65.9–78.4
Hamstrings Isokinetic strength 60°/s (Nm)	149	40.3	36.6–43.9
Hamstrings Isokinetic strength 180°/s (Nm)	149	30.8	28.0-33.6
Flexion	150	120.1	118.1–122.2
Extension	150	-2.3	− 3.2 to − 1.4
Walking speed (cm/s)	145	98.9	95.0–102.7
Step length surgical leg (cm)	145	57.6	55.7–59.5
Step length healthy leg (cm)	145	58.0	56.4–59.7
Stance surgical leg (%GC)	145	67.3	66.5–68.2
Stance healthy leg (%GC)	145	65.8	65.0–66.7
Swing surgical leg (%GC)	145	33.1	32.3–33.9
Swing healthy leg (%GC)	145	34.7	34.0–35.4
Single support surgical leg (%GC)	145	34.5	34.0–35.0
Single support healthy leg (%GC)	145	32.9	32.2–33.5
Double support surgical leg (%GC)	145	33.0	31.9–34.1
Double support healthy leg (%GC)	145	33.2	32.2–34.3

n number, %GC percentage of gait cycle