Table 8.

Components exchanged or removed due to dislocation or loosening of the Spectron EF Primary prosthesis

	Dislocation				Loosening
	ALT		Posterior		ALT		Posterior
	n	%	n	%	n	%	n	%
Stem	1	6	0	0	13	13	3	11
Stem and cup	4	22	1	4	32	33	9	33
Cup	9	50	18	69	48	50	13	48
Extraction	2	11	1	4	4	4	2	7
Other	2	11	6	23
Total	18	100	26	100	97	100	27	99