Meniscal flounces refers to the "ruffled" appearance of the inner margin of the knee meniscus. They were initially thought to be only an arthroscopic finding, as a result of joint distension and anaesthetic muscle relaxants but are rarely seen on MRI.
Meniscal flounces are rare, seen in around 0.2% of MRI scans, more frequently of the medial meniscus.
They are not associated with an increase incidence of meniscal tears, but can be mistaken for one. They reflect a degree of redundancy in the medial meniscus and are typically seen in the flexed knee.
In coronal projections they may make the inner margin of the meniscus appear truncated or blurred.
History and etymology
Out of interest a flounce is a ruffle placed around a garment (often undergarment) as a decoration.
- radial-type meniscal tear
The knee is a complex synovial joint that can be affected by a range of pathologies:
- bone and cartilage
- distal femoral condyle fracture
- tibial plateau fracture (classification)
- patella fracture
avulsion fractures of the knee
- Segond fracture
- reverse Segond fracture
- anterior cruciate ligament avulsion fracture
- posterior cruciate ligament avulsion fracture
- arcuate complex avulsion fracture (arcuate sign)
- biceps femoris avulsion fracture
- iliotibial band avulsion fracture
- semimembranosus tendon avulsion fracture
- Stieda fracture (MCL avulsion fracture)
- patella fracture
- chronic avulsion injuries
- chondromalacia patellae
- osteoarthritis of the knee
- osteochondral defects
- osteochondritis dissecans of the knee
- pattern of bone contusion in knee injuries
- knee fractures
- meniscal lesions
- synovial lesions
- fat pad
- popliteal fossa
- 1. Yu JS, Cosgarea AJ, Kaeding CC et-al. Meniscal flounce MR imaging. Radiology. 1997;203 (2): 513-5. Radiology (abstract) - Pubmed citation
- 2. Davies AM, Cassar-Pullicino VN. Imaging of the Knee, Techniques and Applications. Springer Verlag. (2003) ISBN:3540002502. Read it at Google Books - Find it at Amazon
- 3. Nguyen JC, De Smet AA, Graf BK et-al. MR imaging-based diagnosis and classification of meniscal tears. Radiographics. 2014;34 (4): 981-99. doi:10.1148/rg.344125202 - Pubmed citation