Research Article
[Retracted] Multicentre Study Using Machine Learning Methods in Clinical Diagnosis of Knee Osteoarthritis
Table 1
Description and imageological features of Kellgren-Lawrence (K-L) grade.
| Kellgren-Lawrence (K-L) grading scale | Classification | Grade 0 normal | Grade 1 doubtful | Grade 2 mild | Grade 3 moderate | Grade 4 severe |
| Description | No signs of OA | Mild osteophyte: normal joint space | Specific osteophyte: normal joint space | Moderate joint space reduction | Joint space greatly reduced: subchondral sclerosis |
| X-ray image | | | | | |
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