ReportFoundry - RSNA Knee MRI Challenge

Case 288

assigned

Report English

Medial Compartment: Normal bone marrow signal. Intact cartilage. Early mucoid degeneration of the posterior horn of the medial meniscus. Intact MCL. Lateral Compartment: Normal bone marrow signal. Intact cartilage. Radial tear of the anterior horn of the lateral meniscus with longitudinal extension into the pars intermedia (Series 4/ Image 88, Series 7/ Image 22). Intact LCL. Femoropatellar Joint and Trochlea: Significantly thinned cartilage on the medial patellar facet in the middle third with small subchondral cysts (Series 8/ Image 19). Focal full-thickness cartilage defect with adjacent subchondral debris cyst in the inferior part of the lateral patellar facet (Series 8/ Image 13). Otherwise, normal bone marrow signal. Normal appearance of the quadriceps and patellar tendons. Normal appearance of Hoffa's fat pad. Cruciate Ligaments: Multiple cysts at the tibial insertion of the ACL. Intact cruciate ligaments. Musculature and Other Soft Tissues: No joint effusion. Advanced chondropathy of the medial and lateral patellar facets with focal full-thickness cartilage defect medially and deep defect laterally, each with evidence of small subchondral cysts. - Otherwise, no high-grade chondropathy. - Complex tear of the lateral meniscus with a radial component in the anterior horn and subsequent longitudinal tear formation in the pars intermedia. - Intact medial meniscus. - Intact ligament structures. - No joint effusion.

Report English Structured

## ACL * Multiple cysts at the tibial insertion of the ACL. * Intact cruciate ligaments. ## MCL * Intact MCL. * Intact ligament structures. ## Medial Meniscus * Early mucoid degeneration of the posterior horn of the medial meniscus. * Intact medial meniscus. ## Lateral Meniscus * Radial tear of the anterior horn of the lateral meniscus with longitudinal extension into the pars intermedia (Series 4/ Image 88, Series 7/ Image 22). * Complex tear of the lateral meniscus with a radial component in the anterior horn and subsequent longitudinal tear formation in the pars intermedia. ## Medial OA * Intact cartilage. * Otherwise, no high-grade chondropathy. ## Lateral OA * Intact cartilage. * Otherwise, no high-grade chondropathy. ## PF OA * Significantly thinned cartilage on the medial patellar facet in the middle third with small subchondral cysts (Series 8/ Image 19). * Focal full-thickness cartilage defect with adjacent subchondral debris cyst in the inferior part of the lateral patellar facet (Series 8/ Image 13). * Advanced chondropathy of the medial and lateral patellar facets with focal full-thickness cartilage defect medially and deep defect laterally, each with evidence of small subchondral cysts. ## Effusion * No joint effusion. * No joint effusion. ## Synovitis * [N/A] ## Baker's Cyst * [N/A] ## Contusion * Normal bone marrow signal. * Normal bone marrow signal. * Otherwise, normal bone marrow signal. ## Fracture * [N/A]

## ACL
* Multiple cysts at the tibial insertion of the ACL.
* Intact cruciate ligaments.

## MCL
* Intact MCL.
* Intact ligament structures.

## Medial Meniscus
* Early mucoid degeneration of the posterior horn of the medial meniscus.
* Intact medial meniscus.

## Lateral Meniscus
* Radial tear of the anterior horn of the lateral meniscus with longitudinal extension into the pars intermedia (Series 4/ Image 88, Series 7/ Image 22).
* Complex tear of the lateral meniscus with a radial component in the anterior horn and subsequent longitudinal tear formation in the pars intermedia.

## Medial OA
* Intact cartilage.
* Otherwise, no high-grade chondropathy.

## Lateral OA
* Intact cartilage.
* Otherwise, no high-grade chondropathy.

## PF OA
* Significantly thinned cartilage on the medial patellar facet in the middle third with small subchondral cysts (Series 8/ Image 19).
* Focal full-thickness cartilage defect with adjacent subchondral debris cyst in the inferior part of the lateral patellar facet (Series 8/ Image 13).
* Advanced chondropathy of the medial and lateral patellar facets with focal full-thickness cartilage defect medially and deep defect laterally, each with evidence of small subchondral cysts.

## Effusion
* No joint effusion.
* No joint effusion.

## Synovitis
* [N/A]

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

## Contusion
* Normal bone marrow signal.
* Normal bone marrow signal.
* Otherwise, normal bone marrow signal.

## Fracture
* [N/A]

Findings

None

Saved.