Table 3.

Migration in the early weight bearing (E) group and the standard weight bearing (S) group at 3 follow-up times. Values are translation (T) in mm and rotation (R) in degree.

Follow-up	E		S
Axis	Mean (SD)	(Range)	Mean (SD)	(Range)
In 1 patient in the S group, the postoperative RSA radiograph was missing; for this patient, the 6-week result served as baseline.
a,b Significant migration (2-sided, p < 0.05) at the follow-up within the a E and b S groups, tested with the Wilcoxon test, but not clinically relevant.
c Significant difference in migration (2-sided, p < 0.05) in the S group compared with the E group, tested with the Mann–Whitney U test, but migrations were below the detection limit.
6 weeks
Tx	-0.02 (0.36)	(-0.70–0.60)	0.17 (0.24) b	(-0.09–0.84)
Ty	-0.10 (0.24)	(-0.75–0.27)	-0.15 (0.19) b	(-0.64–0.19)
Tz	-0.01 (0.14) c	(-0.20–0.30)	-0.19 (0.37) b, c	(-0.79–0.46)
Rx	-0.16 (0.74)	(-1.18–1.78)	-0.57 (0.89) b	(-3.20–1.03)
Ry	-0.16 (0.52)	(-0.92–0.60)	-0.15 (0.60)	(-1.70–0.80)
Rz	-0.01 (0.67)	(-1.69–1.04)	-0.05 (0.66)	(-1.79–1.10)
3 months
Tx	-0.01 (0.40)	(-0.86–0.69)	0.14 (0.24) b	(-0.27–0.71)
Ty	-0.13 (0.22)	(-0.75–0.19)	-0.17 (0.25) b	(-0.74–0.22)
Tz	-0.05 (0.20)	(-0.50–0.32)	-0.17 (0.33) b	(-0.78–0.40)
Rx	-0.41 (0.99)	(-2.11–2.17)	-0.88 (1.47) b	(-6.14–1.49)
Ry	-0.09 (0.58)	(-1.18–0.94)	-0.05 (0.47)	(-0.84–0.73)
Rz	0.06 (0.75)	(-1.72–1.42)	0.16 (0.54)	(-0.79–1.04)
12 month
Tx	-0.03 (0.40)	(-0.81–0.73)	0.07 (0.25)	(-0.43–0.58)
Ty	-0.18 (0.27) a	(-0.97–0.16)	-0.29 (0.49) b	(-1.83–0.14)
Tz	-0.08 (0.21)	(-0.53–0.35)	-0.23 (0.32) b	(-0.76–0.53)
Rx	-0.73 (0.88) a	(-2.26–0.60)	-1.18 (1.12) b	(-4.45–0.73)
Ry	-0.07 (0.51)	(-0.89–0.75)	0.12 (0.67)	(-0.78–2.06)
Rz	0.19 (0.82)	(-1.76–1.46)	0.45 (0.86)	(-0.68–2.06)