Analysis of microvascular density and collagen structure of the medial meniscotibial ligament of the knee: Immunohistochemical study with CD31 and histology with Picrosirius red.

Background: The aim of the present study was to describe the structure of the collagen matrix and the microvascularization of the medial meniscotibial ligament (MMTL), in order to contribute to the refinement of the surgical technique for repairing these structures and consequently lead to a reduction in the risk of anterior cruciate ligament re-rupture.

Methods: Twelve MMTLs were obtained from deceased organ donors. The ligaments were initially analyzed macroscopically and evaluated histologically using hematoxylin and eosin staining.