In the case of the knee there is a meniscus on the inside and another on the outside. They are attached just to the edge of the tibial plateau thus increasing the articular surface between the femur and the tibia, favoring the mobility of the knee.The internal meniscus has a semilunar shape, more open than the external one that is almost circular, and is the one that breaks most frequently because it is attached to the joint capsule and has less freedom of movement than the external meniscus.Since they are not closed rings, the ends or horns of each meniscus are one in front (anterior horn) and another behind (posterior horn) in the direction of the knee. In this article we are going to talk about meniscus tear. Click here for meniscus tear surgery.
Its function is to stabilize the joint and dampen the friction between the bone surfaces, preventing wear and tear on the articular cartilage of the bone. Visit this site for meniscus tear surgery.
Type of meniscus lesions
Dissections or ruptures of the menisci can be degenerative or traumatic. They are also frequent injuries of the sport practice by violent turns of the knee.
Depending on whether the break is complete or incomplete, it will give more or less functional limitation and will determine the recovery time after the operation.
The meniscal cyst is generally associated with a horizontal rupture in which the center of the meniscus degenerates and ends up expelling the contents to the lateral forming the cyst.
Symptoms of meniscus rupture
When it breaks or tears, the meniscus can move out of place (meniscus dislocation) and block the knee totally or partially making it impossible to extend it, causing acute pain in the sides of the affected knee.
There may be joint effusion (fluid in the knee) after rupture, but it is rare that there is blood in the effusion. When there is blood it usually indicates an associated lesion of a cruciate ligament or a bone fracture.