Meniscal flounce(裙边样半月板)
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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.
裙边样半月板(Meniscal flounces)是指膝关节半月板内缘的“皱褶”外观。它们最初被认为只是关节镜下表现,是关节肿胀和麻醉肌松药的结果,但很少在MRI上看到。
Epidemiology
Meniscal flounces are rare, seen in around 0.2% of MRI scans, more frequently of the medial meniscus.
裙边样半月板是罕见的,约见于0.2%的病人MRI检查,更常见于内侧半月板。
Pathology
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.
它们与半月板撕裂的发病率无关,但可能会被误诊为撕裂。反映内侧半月板一定程度的冗余,通常在弯曲膝关节中见到。
Radiographic features
MRI
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.
Differential diagnosis
radial-type meniscal tear
鉴别诊断:放射状半月板撕裂
来源:jxradiology HW ZHAO译