Percentage area of wear scars on UHMWPE patellae following 3 million cycles of wear simulation, the wear scar on the Group 3 implants could not be analysed due to the gross failure of the polyethylene.					
Data relates to values in Figure 5 in the manuscript					
					
					
	Group 1			Group 2	
Sample	Round	Oval		Round	Oval
1	27.2	27.4		70.3	36.4
2		34.2		60.5	43.2
3				50.5	45.3