MOREL LAVALLEE LESION ON ULTRASOUND

" MOREL LAVALLEE LESION"

Clinicals - H/O trauma 

- Painful swelling anterior aspect of knee 

 Fig 1- Sagittal Extended field of view image anterior aspect of knee joint showing well defined area of  fluid collection in subcutaneous  fat plane with few thin septas & fat lobules . The lesion is extending above and below knee joint .

Fig 2- High resolution US scan anterior aspect knee joint showing fluid , thin floating septas & echogenic fat lobules with in superficial fascia & subcutaneous plane . The findings are consistent with "Morel Lavallee Lesion "

MOREL LAVALLEE LESION -  It is due to  closed degloving soft tissue injury associated with trauma . In this lesion skin & subcutaneous fat abruptly separate from underlying deep fascia forming a hemolymphatic mass . Thigh at greater trochanteric area is the most common site .