Bearing-Foreign Material Deposition on Retrieved Co-Cr Femoral Heads: Composition and Morphology

Table 1

Comparison of roughness parameters averaged over eight representative OP scans each in both clean and deposition regions of the femoral heads.

Head	“Clean” region			Deposition region
	(m)	(m)	(m)	(m)	(m)	(m)
A	0.04 ± 0.00	0.06 ± 0.01	1.33 ± 0.57	0.50 ± 0.20	0.70 ± 0.30	14.40 ± 4.70
B	0.08 ± 0.00	0.10 ± 0.01	6.11 ± 3.00	0.20 ± 0.10	0.40 ± 0.10	53.90 ± 10.40
C	0.09 ± 0.00	0.12 ± 0.01	9.59 ± 5.14	0.30 ± 0.10	0.50 ± 0.10	48.20 ± 6.40
D	0.07 ± 0.00	0.10 ± 0.01	1.64 ± 0.68	0.40 ± 0.10	0.60 ± 0.10	10.40 ± 2.30
E	0.09 ± 0.02	0.13 ± 0.03	8.75 ± 5.45	0.30 ± 0.10	0.70 ± 0.20	56.70 ± 14.00
Average	0.07 ± 0.01	0.10 ± 0.02	5.48 ± 4.89	0.34 ± 0.09	0.58 ± 0.19	36.72 ± 10.96