Table 2.

Description of damage on all articulating and taper surfaces for all cases. (N/A: not applicable)

Case Number	Cup	Head	Head taper	Sleeve taper (male)	Sleeve taper (female)	Stem taper	Neck/Stem taper (male)	Neck/Stem taper (female)
#1	no to minimal wear	no wear	minimal damage	N/A	N/A	minimal damage	N/A	N/A
#2	moderate wear	no wear	minimal damage	N/A	N/A	minimal damage	N/A	N/A
#3	severe wear (distinct wear scar)	severe wear (distinct wear scar)	mild fretting corrosion	minimal damage	minimal damage	minimal damage	severe fretting	moderate fretting corrosion
#4	plastic deformation, creep, scratches	no wear	severe fretting corrosion	N/A	N/A	completely worn away	N/A	N/A
#5	not available	no wear (Ti-alloy transfer)	minimal damage	N/A	N/A	minimal damage	severe fretting corrosion	severe fretting corrosion