Mean surface roughness (Ra) of patellae following 3 million cycles of wear simulation under mal-aligned conditions			
Data relates to Table 3 in the manuscript			
			
SAMPLE	Group 1	Group 2	Group 3
1	3.529	8.7175	20.863
2	1.509	12.965	14.227
3	10.11	13.37	7.595
4		4.97	
5		15.643	
6		13.193