Table 5.

Data on loosened cups

Case	Age	Group	Gender	Diagnosis	Acetabular anatomy	Cup size (mm)	Head diameter (mm)	Screws	Abduction angle (°)	Cup loosening (months)	Revision cup (months)
1	59	2	Female	RA	A	54	32	yes	55	28	no
2	67	2	Female	OA	B	50	32	no	55	48	no
3	64	2	Female	Dysplasia	A	46	28	no	45	25	46
4	39	1	Female	Dysplasia	C	48	28	yes	40	14	no
5	52	2	Male	Legg-Calvè-Perthes	B	48	28	no	55	1*	6
6	45	2	Female	RA	A	50	32	yes	75	12*	16
7	53	2	Male	Avascular necrosis	B	56	32	no	45	10	no
8	21	1	Female	RA	A	52	32	yes	52	22	no
9	46	2	Female	Dysplasia	C	52	32	yes	55	20	29
10	28	1	Female	Legg-Calvè-Perthes	B	56	32	yes	50	60	68
11	34	1	Male	Dysplasia	B	54	32	no	45	38	47
12	29	1	Female	Dysplasia	C	46	28	no	45	36	no
13	60	2	Female	OA	B	52	32	no	45	48	no
14	62	2	Female	RA	A	54	32	yes	42	36	no

RA = rheumatoid arthritis; * = poor pressfit.