Lip heightof scratches (micrometre) on PEEK-OPTIMA and cobalt chrome plates taken pre- and post- wear simulation, data relates to Table 2.						
						
	1um lip height		2um lip height		4um lip height	
	pre-test	post-test	pre-test	post-test	pre-test	post-test
CoCr 1	1.35	1.24	2.24	1.96	3.85	3.73
CoCr 2	1.31	1.16	2.06	2.06	4.32	4.21
CoCr 3	1.38	1.29	2.18	1.86	4.68	4.38
CoCr 4			2.28	2.08	4.42	4.20
PEEK 1	1.00	0.45	2.80	1.42	3.50	1.98
PEEK 2	1.05	0.58	2.55	0.66	4.83	2.58
PEEK 3	1.28	0.96	2.58	1.59	3.72	1.08
PEEK 4			3.33	1.58	4.83	1.53