@oprmngr Structure of the meniscus; the side U has the appearance of the letter U. Although the external structure of the meniscus has a thicker structure than the inner region, it meets the nutritional needs thanks to the vascular networks that cover it and has a tighter structure than the other region. Likewise, the inner meniscus has vascular networks in this way, but it is more sensitive in terms of external protection and more fragile and difficult to treat in cases such as injury.