Table 2.

Physical characteristics of the UHMWPE particles

	MARATHON		XLK		AOX
	Average	Range	Average	Range	Average	Range
Particle size (μm)	2.67	0.48 ~ 23.08	3.9	0.82 ~ 24.94	3.16	0.11 ~ 17.18
Aspect ratio	1.73	1.1 ~ 4.63	1.86	1.04 ~ 8.11	1.75	1.07 ~ 16.94
Roundness	0.62	0.22 ~ 0.91	0.59	0.12 ~ 0.97	0.64	0.06 ~ 0.94
Form factor	0.64	0.12 ~ 0.92	0.57	0.14 ~ 0.88	0.58	0.01 ~ 0.91
Perimeter (μm)	11.48	1.78 ~ 138.26	17.59	2.94 ~ 15.50	14.47	0.43 ~ 194.87