Table 11.

Results for reliability of radiographic classifications

Radiographic classification	Intra-observer reliability		Inter-observer reliability
	Rater 1	Rater 2
Weinstein	0.543	0.63	0.76
Guyette	0.661	0.706	0.761
Kellgren and Lawrence	0.575	0.679	0.704
Samilson and Prieto	0.817	0.816	0.871
Allain (SPA)	0.791	0.811	0.847
Gerber (SPG)	0.797	0.842	0.86
Buscayret (SPB)	0.773	0.827	0.828
Hawkins and Angelo	0.584	0.648	0.755
Rosenberg	0.661	0.749	0.764

Intra-observer reliability (repeatability) and inter-observer reliability (reproducibility) for all included classifications except for Walch.