|
Kellgren classification 46 |
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| I |
doubtful |
minute osteophytes, doubtful significance |
| II |
minimal |
definite osteophytes, unimpaired joint space |
| III |
moderate |
moderate diminution of joint space |
| IV |
Severe |
joint space greatly impaired with sclerosis of subchondral bone |
van der Hart et al. Journal of Orthopaedic Surgery and Research 2008 3:24 doi:10.1186/1749-799X-3-24 |
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