Morel Lavallée lesion of the knee
Right knee trauma. Persistent pain.
Right knee MRI
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A 7 X 7 X 1.7 cm subcutaneous elliptical fluid collection eliciting low T1 and high T2/PDFS/STIR signals is seen antero-superior to the patella enclosed within the splitted deep fascia.
Altered marrow signal of posterior aspect of medial tibial condyle eliciting low T1 and high T2/PDFS/STIR signals.
Minimal intra-articular joint effusion.
Morel Lavallée lesion (closed degloving injury) with marrow edema/contusion of the posterior medial tibial condyle.
Although Morel Lavallée lesion is a name given to this lesion when occuring over the greater trochanter, similar lesion can occur over the knee due to similar mechanism.