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Table 2 Fairbanks classification 26

From: The occurrence of osteoarthritis at a minimum of ten years after reconstruction of the anterior cruciate ligament

Radiological signs

Grades

1. Spurring of the tibial spines

I no changes

2. Marginal osteophytes

II one symptom

3. Flattening of femur/tibia

III two or three changes

4. Narrowing of the joint space

IV all four changes