We report two cases of osteonecrosis of the
medial tibial plateau whith typical symptoms (sudden onset
of pain at the knee, and marked tenderness over the medial
tibial plateau). Initial roentgenograms were within normal
limits or showed mild degenerative joint changes, being
neccesary a magnetic resonance imaging to achieve a diagnosis.
The two cases we report didn't follow the typical evolution
of the process (which is self-limiting in a period of 6 to
12 months), being neccesary in both of them, a total knee
replacement.

We report two cases of osteonecrosis of the
medial tibial plateau whith typical symptoms (sudden onset
of pain at the knee, and marked tenderness over the medial
tibial plateau). Initial roentgenograms were within normal
limits or showed mild degenerative joint changes, being
neccesary a magnetic resonance imaging to achieve a diagnosis.
The two cases we report didn't follow the typical evolution
of the process (which is self-limiting in a period of 6 to
12 months), being neccesary in both of them, a total knee
replacement.