Table 8.

Modified Samilson and Prieto classification according to Gerber

Grade	Description
1	Inferior humeral head or glenoid osteophyteof less than 3 mm.
2	Inferior humeral head or glenoid osteophyte between 3 and 5 mm, associated with mild joint line irregularity and subchondral sclerosis.
3	Degenerative changes in the joint greater than above mentioned.

Modified Samilson and Prieto classification according to Gerber (Table 8): the Gerber modification of the Samilson-Prieto classification shows comparable reliability to its original.