23-year-old male with pain after a fall

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23-year-old male with anteromedial pain and instability since fall. Evaluate for meniscal tear.

Long- and short-axis fat- and water-weighted images were performed; 1.5 Tesla. 

  • 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.

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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