Meniscal flounce（裙边样半月板）

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