Posterior cruciate ligament tear
Presents with knee pain, oedema and instability after falling from motorbike.
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T1 and PD signal intensity heterogenety within PCL associated with its tear. ACL, lateral and medial menisci are unremarkable. A semimembranosus muscle bursitis connecting with joint cavity best seen on axial PDW images. Moderate synovitis and suprapatellar bursitis are also seen. A small area of bone marrow oedema within lateral femoral epicondyle and medial part of tibial plateau associated with its contusion.
Iso-hyperintense signal on PDW images within medial collateral ligament with its thickness reflecting its partial tear - grade 2.
There is a quite rare case of PCL tear associated with MCL tear.