The meniscocapsular junction is the region where the knee meniscus attaches to the capsule that surrounds the knee joint.
The arrow is showing a tear in the meniscocapsular junction.
In particular there is a gap at the back of the lateral meniscus where the popliteus tendon passes between the two, creating a vulnerable area there.
Damage to the area where the meniscus is tethered to the capsule may be missed on an MRI scan, and cannot be seen during arthroscopy without probing. So it may go unrecognised - commonly when there is a concomitant ligament injury (eg ACL) dominating the clinical picture. Their significance become apparent when knee laxity continues despite ligament reconstruction.
"....this type of injury is often missed, both during MRI reading and due to its "blind" point of arthroscopic vision....[and]....may lead to meniscocapsular or meniscotibial disruption....."
A-Z Keywords - Ramp lesion, Diagnostic arthroscopy, Meniscotibial ligament, Meniscofemoral ligament
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