Table 1.

Demographic data on included patients.

	N	Age (years)		Gender
		Mean (±SD)	p	N of male/female	p
Group 1 Revision Surgery due to AL	20	70.35 ± 11.4	0.119	6/14	0.537
Group 2 Primary Surgery due to OA	15	63.33 ± 14.5		6/9
Group 3 Healthy Donors	15	32.87 ± 3.4	< 0.001*	9/6

AL- Aseptic loosening; OA- Osteoarthritis. ^*Comparing Group 3 with both Group 1 and Group 2.