Wear studies on prosthetic materials using the pin-on-disc machine

The influence of slip velocity on wear of total knee arthroplasty

“…Maxima were µ 1 = 0.047, µ 2 = 0.061, and µ 3 = 0.036 for the three tests and their different velocity ranges. Those values are within the range of friction values reported elsewhere [15][16][17].…”

Advances in tribological testing of artificial joint biomaterials using multidirectional pin-on-disk testers

“…Surface evaluations revealed that dry lubrication resulted in melting of the surface, which caused delamination and polyethylene transfer (Dowson and Harding, 1982; Dumbleton and Shen, 1976; Tetreault and Kennedy, 1989) and led to the high wear rates when the product of pressure and velocity limit of the material was exceeded (Dumbleton and Shen, 1976; Rose et al, 1982; Shen and Dumbleton, 1974). While water lubrication also displayed polyethylene transfer (Cooper et al, 1993; McKellop et al, 1978; Tetreault and Kennedy, 1989), which was not clinically relevant, serum lubrication produced scratches on otherwise burnished surfaces similar to those of retrieved implants (McKellop et al, 1978; Rose et al, 1982; Walker et al, 1996; Wright et al, 1982). Thus, it was established that serum or other protein containing lubrication was required in laboratory tests to facilitate wear mechanisms similar to those in vivo (Ahlroos, 2001; McKellop et al, 1978; Rose et al, 1982; Saikko, 2003; Walker et al, 1996; Wright et al, 1982; Yao et al, 2003).…”

“…Modifying processing steps (Barbour et al, 1999; Gul et al, 2003), crosslinking followed by heat treatments and antioxidant additives (Muratoglu et al, 1999; Muratoglu et al, 2003; Oral et al, 2010; Oral et al, 2004), composites (Deng and Shalaby, 1997), alternative counterbearings (Dowson and Harding, 1982; McKellop et al, 1978; Miller et al, 1974; Saikko and Ahlroos, 1999; Shen and Dumbleton, 1974), and even coatings of UHMWPE and the counterface (Hill et al, 2008; Pavoor et al, 2006) were evaluated. The introduction of all these designs and different materials brought about the need to practically and economically screen various bearing couples to identify only the most promising iterations for expensive joint simulations (Dumbleton et al, 1974; Dumbleton, 1978; Wright et al, 1982). …”

“…From very early on it transpired that multidirectional motion was a large accelerator of UHMWPE wear, and that necessitated multi-directional pin-on-disk testing to capture physiologically realistic levels of wear in artificial joints with UHMWPE bearings (Charnley, 1976; Walker et al, 1996; Wright et al, 1982). …”

Biotribocorrosion: surface interactions in total joint replacement (TJR)

“…From a tribological point of view, in MoM artificial joints, sliding wear is the dominant wear mechanism. Pin-on-disc or ball-on-disc tests have been extensively carried out worldwide [58,59]. Materials which have high wear in pin-on-disc experiments are expected to have high wear rates when they used in joint replacement.…”