We found no correlation between radiographic OA and physical function or pain.

Conclusion: Serum Mg concentration may have an inverse relationship with radiographic OA of the knee.

We examined MRI abnormalities detected in knees without radiographic OA and their association with incident knee symptoms.

Radiographic OA of the ankle was present in 47% of the cases and was not related to patient satisfaction.

The radiographic OA of the knee was defined as changes equivalent to Kellgren-Lawrence grade 2 on 1 side at least.

Radiographic OA of the knee was defined as changes consistent with Kellgren-Lawrence (K-L) grade 2 on at least 1 side.