Osteochondral knee injury and ACL rupture

Case contributed by Bálint Botz
Diagnosis certain


Multiple prior injuries, right-sided knee pain. ?ACL rupture

Patient Data

Age: 40 years
Gender: Male
  • about 20 mm fragmented osteochondral injury of the medial femoral condylar surface; the fragments are only minimally displaced though there is considerable fluid seeping in between them putting the injury between stage III and IV
  • more discrete chondral delamination injury of the medial tibial condyle with subchondral edema
  • discontinuity of the anterior cruciate ligament (ACL) with a shallow angle
  • moderate knee joint effusion and synovial proliferation

Case Discussion

Extensive, likely subacute/chronic osteochondral injury and status post anterior cruciate ligament (ACL) rupture with resultant joint effusion. 

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