Pellegrini-Stieda lesion

![At the left side on the AP radiography of the knees is observed calcification of the medial collateral ligament in its proximal portion, in addition to a decrease in the medial femorotibial space. At the right side in the coronal acquisition with T1 information of the knee becomes evident an ossification in the proximal end of the medial collateral ligament, in relation with an old-injury, configuring a Pellegrini–Stieda lesion. Osteoarthritic changes with formation of marginal osteophytes in the medial compartment are also observed.

Restrepo JP, Pilar del. Pellegrini–Stieda syndrome: More than a radiological sign. Revista Colombiana de Reumatología (English Edition). 2016;23(3):210-212. doi:https://doi.org/10.1016/j.rcreue.2016.12.004](attachment:61454935-f5aa-4956-bda7-b703ea7c6aa6:ps.jpeg)

At the left side on the AP radiography of the knees is observed calcification of the medial collateral ligament in its proximal portion, in addition to a decrease in the medial femorotibial space. At the right side in the coronal acquisition with T1 information of the knee becomes evident an ossification in the proximal end of the medial collateral ligament, in relation with an old-injury, configuring a Pellegrini–Stieda lesion. Osteoarthritic changes with formation of marginal osteophytes in the medial compartment are also observed.

![Pellegrino stieda lesion -the calcification of medial collateral ligament reduced joint space asymmetrically with reduced bone density, suggestive of osteopenia with osteoarthritic changes following possibly from trauma

Case courtesy, Dr Nabarun Das, MD // #SMCHCase](attachment:e3ac8966-5e21-4d36-95f6-7f3c9ee2e477:4d57967f-c87a-4cf5-892c-c5005309cdf1.png)

Pellegrino stieda lesion -the calcification of medial collateral ligament reduced joint space asymmetrically with reduced bone density, suggestive of osteopenia with osteoarthritic changes following possibly from trauma

Case courtesy, Dr Nabarun Das, MD // #SMCHCase