The incidence, morphologic characteristics, and cross-sectional area of meniscofemoral ligaments of the knee are still not clarified.
The incidence of meniscofemoral ligaments is very high, and they contribute significantly to the cross-sectional area of the posterior cruciate ligament complex.
Descriptive laboratory study.
Clinical study: During arthroscopic anterior cruciate ligament reconstruction, the presence of a meniscofemoral ligament was confirmed in 38 patients (16 men, 22 women; mean age, 23.6 years) by observation and probing. Laboratory study: Posterior cruciate ligaments with the lateral meniscus attached were obtained as specimens from 30 patients (3 men, 27 women; mean age, 71.9 years) during total knee arthroplasty. The posterior cruciate ligament and meniscofemoral ligaments were observed, and the cross-sectional area was measured using an area micrometer.
Clinical study: The anterior meniscofemoral ligament was found in 36.8% of patients, the posterior meniscofemoral ligament was found in 71.1%, and both ligaments were found in 26.7%. The overall incidence of at least 1 meniscofemoral ligament was 84.2%. Laboratory study: The anterior meniscofemoral ligament was present in 5 (16.7%) cases, and the posterior meniscofemoral ligament was present in all cases (100.0%). The cross-sectional area of the posterior cruciate ligament proper was 50.1 +/- 16.9 mm(2), that of the anterior meniscofemoral ligament was 2.3 +/- 1.2 mm(2), and that of the posterior meniscofemoral ligament was 7.5 +/- 2.5 mm(2). The mean ratio of the cross-sectional area of meniscofemoral ligaments to the posterior cruciate ligament proper was 17.2% (4.0%-38.9%). The origin of the posterior meniscofemoral ligament from the posterior horn of the lateral meniscus could be classified into 5 types.
The meniscofemoral ligaments contributed significantly to the cross-sectional area of the posterior cruciate ligament complex.
"However, because of a lack of Asian studies, more studies using Asian data are needed to support this hypothesis. Although a few studies have attempted to classify the pMFL by proximal and distal attachment sites, this is insufficient to represent the entire shape of the pMFL morphologically and limits the application of the findings to the diagnosis and treatment of knee injuries (Cho et al., 1999; Nagasaki et al., 2006). "
[Show abstract][Hide abstract] ABSTRACT: The meniscofemoral ligaments (MFLs) run from the medial femoral condyle to the posterior horn of the lateral meniscus and consist of anterior MFL (aMFL) and/or posterior MFL (pMFL) components according to whether it passes anterior or posterior to the posterior cruciate ligament (PCL). The purpose of this study was to analyze the incidence and morphologic features of the MFLs in Koreans and formulate an anatomic classification system of MFLs to aid the detailed interpretation of medical imaging or biomechanical data. One hundred knees from 52 cadavers were studied. Eighty-seven knees had pMFLs, whereas an aMFL was only found in one knee from a male cadaver. The pMFLs and PCLs were longer in males than in females (P < 0.05). The most common type of MFL was the high crossing of a typical pMFL against the PCL in both genders. Regarding other types, the incidence of absent pMFLs was higher in males than in females and the oblique bundle of the PCL was easily confused with the pMFL in several cases in both genders. These results provide the basis for the classification system of the MFL and will contribute to better outcomes for evaluating the MFL and PCL when using medical imaging such as arthro-CT scan or MRI through a better understanding of the anatomy of the MFL and PCL.
[Show abstract][Hide abstract] ABSTRACT: The double posterior cruciate ligament (PCL) sign is seen on a midline sagittal MR image of the knee as a low-signal-intensity linear band paralleling the antero-inferior part of the PCL. Although the sign has a high specificity for a displaced bucket-handle tear of the medial meniscus, it can be mimicked by several normal and abnormal structures in the intercondylar region. Familiarity with these variants and identifying the other features supportive of meniscal injury will help to make a confident diagnosis of bucket-handle tear of the medial meniscus.
[Show abstract][Hide abstract] ABSTRACT: Increased athletic participation by the skeletally immature athlete and a heightened suspicion by physicians have contributed to an increase in the incidence of meniscal injuries in children and adolescents. In young patient, meniscal injury could have long-term consequences, so an understanding of recognition and treatment is essential. We review the anatomy and development of the menisci, review classification and diagnosis of meniscal tears, discuss management options and outcomes of treatment, and focus on discoid lateral meniscus and meniscal cysts.
Sports medicine and arthroscopy review 03/2011; 19(1):50-5. DOI:10.1097/JSA.0b013e318204d01a · 1.68 Impact Factor
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