ReportFoundry - RSNA Knee MRI Challenge

Case 442

assigned

Report English

Medial Compartment: Significant thinning of the femorotibial cartilage, partially with full-thickness cartilage loss (Series 5/Image 24) and focal subchondral bone edema (Series 5/Image 20). Otherwise, normal bone marrow signal. Complex tear of the medial meniscus with a horizontal component in the intermediate part and a radial component in the posterior horn. Medial meniscus extrusion in the intermediate part. Lateral Compartment: Normal bone marrow signal. Slight superficial irregularities of the femorotibial cartilage. Suspected radial tear in the intermediate part of the lateral meniscus. Partial lesion of the MCL with adjacent fluid and slight hyperintense signal alterations. Femoropatellar Sliding Surface and Trochlea: Normal bone marrow signal. Focal deep defect at the inferior patellar ridge (Series 4/Image 14). No subchondral bone edema. Otherwise intact cartilage. Normal appearance of the patellar and quadriceps tendons. Normal Hoffa's fat pad. Cruciate Ligaments: Intact cruciate ligaments. Musculature and Other Soft Tissues: Moderate joint effusion with thickened synovium. Normal flow-void in the captured vessels. Advanced medially accentuated gonarthrosis with extensively high-grade and marginally full-thickness cartilage thinning in the weight-bearing zone of the medial femorotibial joint compartment, with partially subchondral focal edema zones. Retropatellar arthrosis with focal deep defects in the central trochlea (4/18) and at the patellar ridge (4/14). Further superficial irregularities retropatellar and in the lateral femorotibial joint compartment. Medial meniscus extruded in the intermediate part with complex tear formation with a horizontal component in the intermediate part and a radial component in the posterior horn. Suspected tear at the free edge of the lateral meniscus. MCL with irritation state. Chronic irritative synovitis. Moderate joint effusion.

Report English Structured

## ACL * Intact cruciate ligaments. ## MCL * Partial lesion of the MCL with adjacent fluid and slight hyperintense signal alterations. * MCL with irritation state. ## Medial Meniscus * Complex tear of the medial meniscus with a horizontal component in the intermediate part and a radial component in the posterior horn. * Medial meniscus extrusion in the intermediate part. * Medial meniscus extruded in the intermediate part with complex tear formation with a horizontal component in the intermediate part and a radial component in the posterior horn. ## Lateral Meniscus * Suspected radial tear in the intermediate part of the lateral meniscus. * Suspected tear at the free edge of the lateral meniscus. ## Medial OA * Significant thinning of the femorotibial cartilage, partially with full-thickness cartilage loss (Series 5/Image 24) and focal subchondral bone edema (Series 5/Image 20). * Advanced medially accentuated gonarthrosis with extensively high-grade and marginally full-thickness cartilage thinning in the weight-bearing zone of the medial femorotibial joint compartment, with partially subchondral focal edema zones. ## Lateral OA * Slight superficial irregularities of the femorotibial cartilage. * Further superficial irregularities retropatellar and in the lateral femorotibial joint compartment. ## PF OA * Focal deep defect at the inferior patellar ridge (Series 4/Image 14). * Retropatellar arthrosis with focal deep defects in the central trochlea (4/18) and at the patellar ridge (4/14). * Further superficial irregularities retropatellar and in the lateral femorotibial joint compartment. ## Effusion * Moderate joint effusion with thickened synovium. * Moderate joint effusion. ## Synovitis * Moderate joint effusion with thickened synovium. * Chronic irritative synovitis. ## Baker's Cyst * [N/A] ## Contusion * [N/A] ## Fracture * [N/A]

## ACL
* Intact cruciate ligaments.

## MCL
* Partial lesion of the MCL with adjacent fluid and slight hyperintense signal alterations.
* MCL with irritation state.

## Medial Meniscus
* Complex tear of the medial meniscus with a horizontal component in the intermediate part and a radial component in the posterior horn.
* Medial meniscus extrusion in the intermediate part.
* Medial meniscus extruded in the intermediate part with complex tear formation with a horizontal component in the intermediate part and a radial component in the posterior horn.

## Lateral Meniscus
* Suspected radial tear in the intermediate part of the lateral meniscus.
* Suspected tear at the free edge of the lateral meniscus.

## Medial OA
* Significant thinning of the femorotibial cartilage, partially with full-thickness cartilage loss (Series 5/Image 24) and focal subchondral bone edema (Series 5/Image 20).
* Advanced medially accentuated gonarthrosis with extensively high-grade and marginally full-thickness cartilage thinning in the weight-bearing zone of the medial femorotibial joint compartment, with partially subchondral focal edema zones.

## Lateral OA
* Slight superficial irregularities of the femorotibial cartilage.
* Further superficial irregularities retropatellar and in the lateral femorotibial joint compartment.

## PF OA
* Focal deep defect at the inferior patellar ridge (Series 4/Image 14).
* Retropatellar arthrosis with focal deep defects in the central trochlea (4/18) and at the patellar ridge (4/14).
* Further superficial irregularities retropatellar and in the lateral femorotibial joint compartment.

## Effusion
* Moderate joint effusion with thickened synovium.
* Moderate joint effusion.

## Synovitis
* Moderate joint effusion with thickened synovium.
* Chronic irritative synovitis.

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

## Contusion
* [N/A]

## Fracture
* [N/A]

Findings

None

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