ReportFoundry - RSNA Knee MRI Challenge

Case 090

assigned

Report English

Patella slightly laterally positioned when standing. Normal cartilage covering of the femoropatellar joint without relevant chondropathy. Small ossicle at the lower pole of the patella (7/22). Quadriceps and patellar tendons are unremarkable. The medial joint space of the femorotibial joint is slightly narrowed, otherwise normal alignment. Mild bone marrow edema in the medial femoral condyle and on the medial tibial plateau (8/27 and 8/26). Oblique tear in the posterior horn of the medial meniscus at the transition to the posterior root (6/13 or 8/29) with corresponding extrusion of the meniscus up to 6 mm. Significant T2 signal increases in the pars intermedia. Corresponding partially high-grade chondropathy on the medial femoral condyle over an area of up to 10 x 5 mm (7/11 and 8/27). Increasing chondropathy towards the edge of the medial tibial plateau. The lateral meniscus is intact. Normal cartilage covering on the lateral femorotibial side. Posterior and anterior cruciate ligaments are intact. Collateral ligaments are intact. Hemarthrosis. Normal appearance of the surrounding musculature. Slight fluid accumulation in the subcutaneous tissue prepatellar. Oblique tear of the medial meniscus in the posterior horn at the transition to the root with corresponding meniscal extrusion up to 6 mm. Consecutive narrowing of the medial joint space with large full-thickness chondropathy on the medial femoral condyle over approximately 10 x 5 mm (7/11, 8/27) and adjacent reactive edema in the medial condyle and the medial tibial plateau. Preserved cartilage covering femoropatellar and femorotibial laterally. Patella slightly laterally positioned when standing. Significant hemarthrosis.

Report English Structured

## ACL * Posterior and anterior cruciate ligaments are intact. ## MCL * Collateral ligaments are intact. ## Medial Meniscus * Oblique tear in the posterior horn of the medial meniscus at the transition to the posterior root (6/13 or 8/29) with corresponding extrusion of the meniscus up to 6 mm. * Significant T2 signal increases in the pars intermedia. * Oblique tear of the medial meniscus in the posterior horn at the transition to the root with corresponding meniscal extrusion up to 6 mm. ## Lateral Meniscus * The lateral meniscus is intact. ## Medial OA * The medial joint space of the femorotibial joint is slightly narrowed, otherwise normal alignment. * Corresponding partially high-grade chondropathy on the medial femoral condyle over an area of up to 10 x 5 mm (7/11 and 8/27). * Increasing chondropathy towards the edge of the medial tibial plateau. * Consecutive narrowing of the medial joint space with large full-thickness chondropathy on the medial femoral condyle over approximately 10 x 5 mm (7/11, 8/27) and adjacent reactive edema in the medial condyle and the medial tibial plateau. ## Lateral OA * Normal cartilage covering on the lateral femorotibial side. * Preserved cartilage covering femoropatellar and femorotibial laterally. ## PF OA * Normal cartilage covering of the femoropatellar joint without relevant chondropathy. * Preserved cartilage covering femoropatellar and femorotibial laterally. ## Effusion * Hemarthrosis. * Significant hemarthrosis. ## Synovitis * [N/A] ## Baker's Cyst * [N/A] ## Contusion * [N/A] ## Fracture * [N/A]

## ACL
* Posterior and anterior cruciate ligaments are intact.

## MCL
* Collateral ligaments are intact.

## Medial Meniscus
* Oblique tear in the posterior horn of the medial meniscus at the transition to the posterior root (6/13 or 8/29) with corresponding extrusion of the meniscus up to 6 mm.
* Significant T2 signal increases in the pars intermedia.
* Oblique tear of the medial meniscus in the posterior horn at the transition to the root with corresponding meniscal extrusion up to 6 mm.

## Lateral Meniscus
* The lateral meniscus is intact.

## Medial OA
* The medial joint space of the femorotibial joint is slightly narrowed, otherwise normal alignment.
* Corresponding partially high-grade chondropathy on the medial femoral condyle over an area of up to 10 x 5 mm (7/11 and 8/27).
* Increasing chondropathy towards the edge of the medial tibial plateau.
* Consecutive narrowing of the medial joint space with large full-thickness chondropathy on the medial femoral condyle over approximately 10 x 5 mm (7/11, 8/27) and adjacent reactive edema in the medial condyle and the medial tibial plateau.

## Lateral OA
* Normal cartilage covering on the lateral femorotibial side.
* Preserved cartilage covering femoropatellar and femorotibial laterally.

## PF OA
* Normal cartilage covering of the femoropatellar joint without relevant chondropathy.
* Preserved cartilage covering femoropatellar and femorotibial laterally.

## Effusion
* Hemarthrosis.
* Significant hemarthrosis.

## Synovitis
* [N/A]

## Baker's Cyst
* [N/A]

## Contusion
* [N/A]

## Fracture
* [N/A]

Findings

None

Saved.