Retrieval analysis in total knee arthroplasty

Table 2 Studies analyzing the wear of retrieved total knee arthroplasty polyethylene components

Number	Characteristic
1	Visual assessment of wear patterns, CMM
2	Surface laser profilometry
3	Laser scanner CMM
4	PE component thicknesses measurements using a dial indicator
5	Visual assessment of wear patterns, micro-CT
6	Volumetric wear analysis with micro-CT
7	Profilometry with a non-contact profilometer
8	PE component thicknesses measurements
9	Visual assessment of wear patterns, video microscopy, low-incidence laser CMM
10	Visual assessment of wear patterns, linear wear measurement with micro-CT
11	Visual assessment of wear patterns, topographical analysis
12	Laser scanner CMM
13	Raman spectroscopy
14	Calculation of wear based on the reference thickness of PE components with survival

CMM: Coordinate measuring machine; PE: Polyethylene; CT: Computed tomography.