The flipped meniscus sign

Haramati, Nogah; Staron, Ronald B.; Rubin, Stuart J.; Shreck, Elise H.; Feldman, Frieda; jKiernan, Howard

doi:10.1007/bf00197673

Cited by 80 publications

(37 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of double PCL sign, double anterior horn sign, flipped meniscus sign, disproportional posterior horn sign were less common (41.66, 33, 25, and 27.7%, respectively) (Figs. 4,5,6,7,8). As it appears in Table 2, a few combinations of the above signs have been found in significant frequency.…”

Section: Resultsmentioning

confidence: 61%

Meniscal bucket handle tears: a retrospective study of arthroscopy and the relation to MRI

Ververidis

Verettas

Kazakos

et al. 2005

Knee Surg Sports Traumatol Arthrosc

View full text Add to dashboard Cite

In this study, we aim to evaluate the arthroscopic findings of meniscal bucket handle tears and to correlate them with the proposed MR imaging signs of meniscal bucket handle tears suggested in the literature. Thirty-six patients who had a diagnosis of bucket handle tear in arthroscopy, in either medial or lateral meniscus, were included in our study (32 males and 4 females). Meniscal tears were evaluated in arthroscopy according to Dandy's classification. The MRIs were retrospectively analyzed regarding the following findings: absence of bow tie sign, presence of double posterior cruciate ligament (PCL) sign, double anterior horn sign, flipped meniscus sign, disproportional posterior horn sign, and fragment within the intercondylar region. Locked types I and II fragment of medial meniscus and half-length, whole-width and whole length-half-width fragment of lateral meniscus in arthroscopy were basically correlated with fragment within the intercondylar notch and absent bow tie signs in MRI. We did not find the double PCL sign in any of the patients with a lateral meniscal bucket handle tear. The most common signs in MR images of meniscal bucket handle tears were the fragment in the notch sign and the absent bow tie sign. They were observed with equal frequency of 88.8%. The presence of double PCL sign, double anterior horn sign, flipped meniscus sign, disproportional posterior horn sign were less common (41.66, 33, 25, and 27.7%, respectively). We conclude that the presence of at least two of the six MRI signs should be regarded as highly suggestive for bucket handle tears of menisci.

show abstract

Section: Resultsmentioning

confidence: 61%

Meniscal bucket handle tears: a retrospective study of arthroscopy and the relation to MRI

Ververidis

Verettas

Kazakos

et al. 2005

Knee Surg Sports Traumatol Arthrosc

View full text Add to dashboard Cite

show abstract

“…This creates the appearance of an abnormally large anterior horn (³ 6 mm) named the flipped meniscus [34]. If the displaced meniscal fragment and intact anterior horn are not vertically superimposed, but located next to one another in the same horizontal plane, this pattern is named double anterior horn [32].…”

Section: Meniscal Tearsmentioning

confidence: 99%

Musculoskeletal MR: knee

2000

View full text Add to dashboard Cite

Magnetic resonance imaging is the most sensitive, specific, and accurate noninvasive method for diagnosing internal derangement of the knee. During the past 15 years knowledge of pathologic conditions of the knee had evolved significantly. Beyond the basic principles of imaging knee injuries great impact was made on the understanding of indirect or collateral findings, even in rare diseases. In this article the spectrum of disorders of the knee are reviewed and an overview of the current literature is given. This includes considerations about how to achieve a high-standard MR imaging study of the knee, and principles of imaging anterior cruciate ligament and meniscal tears. A focus is put on distinct diseases including intra-articular and intraosseous ganglion cysts, iliotibial band friction syndrome, transient osteoporosis, osteonecrosis, osteochondritis dissecans, and imaging of the articular cartilage.

show abstract

“…[12] Flipped meniscus sign is an anteriorly displaced meniscal fragment lying superior to the native anterior horn. [34] Visualization of only one or no meniscal body segment in consecutive peripheral sagittal MR images constitutes the absent bow tie sign. [5] In double anterior horn sign, the displaced meniscal fragment and intact anterior horn are located next to one another in the same horizontal plane.…”

Section: Discussionmentioning

confidence: 99%

MRI imaging of displaced meniscal tears: Report of a case highlighting new potential pitfalls of the MRI signs

Prasad

Brar

Rana

2014

Indian Journal of Radiology and Imaging

View full text Add to dashboard Cite

Magnetic resonance imaging (MRI) has been found to be an excellent imaging tool for meniscal injuries. Various MRI signs have been described to detect displaced meniscal injuries, specifically the bucket-handle tears. Although these signs are quite helpful in diagnosing meniscal tears, various pitfalls have also been reported for these signs. Double anterior cruciate ligament (ACL) sign refers to presence of a linear hypointense soft tissue anterior to the ACL, which represented the flipped bucket-handle tear of the meniscus. Disproportional posterior horn and flipped meniscus signs represent asymmetrically thickened horns of the menisci due to overlying displaced meniscal fragments. We report a case wherein MRI of the knee showed tear and displacement of the medial patellofemoral ligament (MPFL) and vastus medialis complex, medial collateral ligament (MCL), and posterior cruciate ligament (PCL) mimicking these signs. To our knowledge, internally displaced MPFL and MCLs have not been described as mimics for displaced meniscal fragments.

show abstract

The flipped meniscus sign

Cited by 80 publications

References 18 publications

Meniscal bucket handle tears: a retrospective study of arthroscopy and the relation to MRI

Meniscal bucket handle tears: a retrospective study of arthroscopy and the relation to MRI

Musculoskeletal MR: knee

MRI imaging of displaced meniscal tears: Report of a case highlighting new potential pitfalls of the MRI signs

Contact Info

Product

Resources

About