Table 2.

Proximal/distal migration (in mm) of the implant at 1, 2, 5, and 7 years of follow-up

	Proximal/distal (y-axis) migration (mm)
	1 year	2 years	5 years	7 years
Mean	–0.01	0.00	–0.05	–0.03
Median	–0.01	–0.01	–0.02	–0.02
Standard error	0.01	0.02	0.06	0.03
Minimum	–0.28	–0.37	–0.61	–0.25
Maximum	0.17	0.32	0.24	0.11
Count	42	40	15	12
Lower 95% CI	–0.37	–0.53	0.09	–0.09
Upper 95% CI	0.25	0.13	1.33	1.25