The concept of a cementless isoelastic monoblock cup made of highly cross-linked polyethylene infused with vitamin E: radiological analyses of migration and wear using EBRA and clinical outcomes at mid-term follow-up

Table 4 EBRA measurements of total migration and total wear at each follow-up

	Months	n	Mean	SD	Median	Min	Max
Total migration (mm)	0	44	0.00	0.00	0.00	0.00	0.00
	3	36	0.34	0.41	0.23	0.00	2.07
	12	50	0.80	0.71	0.56	0.00	2.81
	24	48	0.86	0.62	0.70	0.00	2.56
	60	42	1.34	0.63	1.26	0.09	3.14
Total migration rate (mm/year)	3	36	1.89	2.57	0.88	0.00	11.53
	12	50	0.72	0.63	0.48	0.00	2.35
	24	48	0.29	0.21	0.21	0.00	0.83
	60	42	0.21	0.10	0.19	0.01	0.47
Total wear (mm)	0	44	0.00	0.00	0.00	0.00	0.00
	3	36	0.11	0.12	0.06	0.00	0.54
	12	50	0.18	0.17	0.15	0.00	0.78
	24	48	0.28	0.17	0.26	0.00	0.68
	60	42	0.40	0.24	0.32	0.03	1.00
Total wear rate (mm/year)	3	36	0.61	0.70	0.38	0.00	2.72
	12	50	0.17	0.15	0.13	0.00	0.67
	24	48	0.09	0.05	0.09	0.00	0.26
	60	42	0.06	0.04	0.05	0.00	0.17

ISSN: 1471-2474