Findings:
Medial Compartment:
- Medial meniscus: There is a horizontal tear in the posterior horn and
body of the medial meniscus with blunting of the posterior horn, likely
related to partial meniscectomy.
- Cartilage: Mildly increased signal with minimal surface irregularity
without full-thickness defect.
- Medial collateral ligament: Intact.
Lateral Compartment:
- Lateral Meniscus: There is minimal blunting of the body of lateral
meniscus as seen on image 9:21.
- Cartilage: There is a focal area of full-thickness cartilage defect of
the articular surface of tibial plateau as seen on image 9:21. Also seen
is mildly increased signal in the articular cartilage in keeping with
chondromalacia with few areas of partial-thickness cartilage loss.
- Lateral collateral ligament: The lateral collateral ligament is intact.
Anterior compartment:
- Patellar cartilage: There is marked thickening with multifocal areas of
full-thickness cartilage defect involving the medial and lateral
articular surface of patella with extensive subchondral cystic changes,
more so on the lateral articular surface.
-Trochlear cartilage: There multifocal areas of full-thickness cartilage
defect with extensive subchondral edema involving the trochlear
cartilage.
- Medial and lateral retinaculum: Intact
- Quadriceps Tendon: Unremarkable
- Patellar tendon: Minimal increased signal at the proximal attachment of
patellar tendon in keeping with mild tendinopathy.
Cruciate ligaments:
- ACL: Intact.
- PCL: Intact.
Posterolateral corner:
- Popliteus tendon: Unremarkable.
Hoffa's Fat Pad: There is linear edema within the Hoffa's fat pad, likely
related to recent arthroscopy.
Bone marrow: Extensive marrow edema involving the medial femoral condyle,
likely related to recent contusion. Subchondral edema in the lateral
femoral articular surface, likely degenerative in etiology.
Joint space: There is a small suprapatellar joint effusion. There are no
intra-articular loose bodies.
Soft tissues: A small popliteal cyst is noted between the medial head of
the gastrocnemius and the semimembranosus.
IMPRESSION:
1. Horizontal tear of the body and posterior horn of medial meniscus
with blunting status post partial meniscectomy.
2. Blunting of the body of the lateral meniscus.
3. Multifocal cartilage defect involving the lateral and anterior
compartment with extensive subchondral cystic changes as described above
4. Contusion of the medial femoralcondyle.
5. Small suprapatellar joint effusion and small popliteal cyst.
6. Proximal patellar tendinopathy.