CASE HISTORY
23-year-old male with anteromedial pain and instability since fall. Evaluate for meniscal tear.
TECHNICAL FACTORS
Long- and short-axis fat- and water-weighted images were performed; 1.5 Tesla.
KEY IMAGES
This case has no key images.
CASE FINDINGS
- High grade tear of the ACL with folding anteriorly.
- The posterior cruciate ligament and extensor tendons are intact.
- Nondisplaced fracture of the posterolateral tibial plateau. Mildly depressed fracture of the sulcus terminalis of the lateral femoral condyle.
- Nondisplaced fracture posteromedial tibial plateau.
- Medial subluxation and lateral tilt of the patella.
- Grade 2 chondromalacia or chondral contusions central patellar ridge and lateral facet.
- Femorotibial chondral contusions. No meniscal tear demonstrated.
- Posterolateral corner complex is intact. Low grade sprain without tear of both collateral ligament complexes.
- Popliteal neurovascular structures are unremarkable.
CASE CONCLUSION
FULL THICKNESS ACL TEAR WITH DISTAL FRAGMENT FOLDED ON ITSELF ANTERIORLY AS PSEUDOMASS.
- Typical fractures in the lateral compartment.
- Contrecoup fracture of the posteromedial tibial plateau.
- Low grade sprain without tear of both collateral ligament complexes. Femorotibial chondral contusions. No traumatic meniscal tears.
- Grade 2 chondromalacia or chondral contusions central patellar ridge and lateral facet. Mild maltracking.
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