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. 2014 Feb 26;4(1):e4. doi: 10.2106/JBJS.ST.M.00033

TABLE II.

Arthroscopic Grading of Hill-Sachs Defects as Described by Calandra et al.6

Calandra Grade Description
1 Articular surface defect not involving subchondral bone
2 Articular surface defect including subchondral bone
3 Large defect in subchondral bone