MSK MRI

Type 3 lesions, also known as “hidden lesions,” occur in the most inferior portion of the posterior horn and are associated with meniscotibial ligament instability. They are not visible with the transnotch approach, but they may be suspected in case of mobility at probing. There are two different subtypes of type 3 lesions in order to account for the meniscotibial ligament instability. Type 3A r..

Ramp lesion type 2 is a peripheral partial thickness tear involving the superior margin of the posterior horn, where the torn fragment contains the intact meniscocapsular attachment to the posterior horn. Linear vertical fluid signal reaching the superior articular surface of the posterior horn of the medial meniscus red-red zone. (Partial thickness superior vertical tear through the posterior h..

Type 1 Ramp lesion is an isolated posterior superior meniscocapsular tear. Meniscocapsular tears are located peripherally and involve the synovium, leading to posterior meniscocapsular separation from the posterior horn of the medial meniscus. The meniscotibial ligament and the posterior horn itself remain intact. This tear pattern is commonly located in the posteromedial “blind spot” and is par..

The posterior meniscotibial ligament attachment to the PHMM had a mean length of 14.0 ± 5.4 mm at its insertion on the posterior tibia. The posterior meniscocapsular attachment to the PHMM had a mean length of 20.2 ± 6.0 mm. The dMCL had a broad, firm attachment to the midbody of the medial meniscus. The dMCL meniscofemoral attachment blended with the POL meniscofemoral attachment posteriorly an..

The meniscotibial ligament attachment merged with the posterior meniscocapsular attachment to form a common attachment at the meniscocapsular junction. The posterior meniscotibial ligament attachment to the PHMM had a mean length of 14.0 ± 5.4 mm at its insertion on the posterior tibia. The meniscotibial tibial ligament attachment was located 5.9 ± 1.3 mm inferior to the articular cartilage marg..

anatomy of posteromedial capsular‐meniscal unit The meniscocapsular junction of posterior horn of medial meniscus is composed of the meniscocapsular ligament superiorly (also known as meniscosynovial or synovial membrane ligaments) and the meniscotibial ligament inferiorly, both of which attach peripherally into the posterior horn of the medial meniscus. The meniscocapsular and meniscotibial lig..

Medial meniscus is firmly attached to the tibia and femur, acting as a knee stabilizer, and preventing anterior translation, especially in the ACL-deficiency. Ramp lesions, whose name reflects the ramp-like appearance of the posteromedial zone, are a particular type of injury within the posterior horn of the medial meniscus and its meniscocapsular attachments. To date, there is no consensus rega..