Table 7.

Summary of the in-vivo wear studies (All the values listed below are the mean values)

Researcher	Test subjects	Results	Testing technique
Geringer [58]	12 explants of DMC	Convex: 36.7±29.1 mm3/year	In-vivo test (CMM)
		Concave: 22.1±39.2 mm3/year
		Total wear rate: 53.9±50.3 mm3/year
Imbert [22]	8 explants of DMC	Convex: 29.72 mm3/year	In-vivo test (CMM)
		Concave: 15.96 mm3/year
Boyer [23]	35 explants of DMC	Convex: 25 mm3/year	In-vivo test (Light Surface Scanner)
		Concave: 12 mm3/year
Adam [24]	40 retrieved DM liners	convex: 28.9 mm3/year	In-vivo test (Surface analysis)
		concave: 25.5 mm3/year
		total wear rate: 54.3 mm3 year
Deckard [25]	34 implants of DMC	Mean volumetric wear:	Martell methodology at regular postoperative intervals
		783 mm3/year at 1 year
		555 mm3/year at 2 years
		104 mm3/year at 5 years
Leonard [26]	129 retrieved DM liners	The lever-out force for same manufacturer: 272.6±68.7 N and mixed manufacturer: 299.2±89.0 N	Lever-out test