Anatomical Study of the Posterior Root of Medial Meniscus in Human Knee
DOI:
https://doi.org/10.1016/j.rccot.2020.06.010Keywords:
menisci, tibial, knee, knee joint, anatomyAbstract
Background: The anatomical knowledge of the footprint of the root of the posterior horn of the medial meniscus (PRMM) of the knee is essential in planning the meniscal reinsertion. The aim of this study was to describe the footprint of the Posterior Root of Medial Meniscus and define the topographical relationship with Cruciate Ligaments in the human knee.
Methods: Ten human cadaveric knees were studied. These samples had intact cruciate ligaments and meniscus with no evidence of trauma on the tibial plateau. The Posterior Horn of the Medial Meniscus was removed from the Posterior Root. We identified and mapped the Posterior Root based on the topographical relationship with its tibial footprint. We performed measurements of the tibial plateau's size, the root and its distance to the cruciate ligaments. Each knee had a CT scan and 3D reconstruction with a metalic tool that served as reference at the center of the root.
Results: The Posterior Root of Medial Meniscus has a higher anteroposterior foot print 8.3 mm (SD2.7) than medio-lateral 4.3 mm (SD 1.5). Is located 6.9 mm (SD 2.3) from the tibial insertion of Posterior Cruciate Ligament and 11.4 mm (SD 1.06) from the tibial insertion of Anterior Cruciate Ligament.
Discussion: This anatomical study provides new knowledge and information concerning the foot print of the root of posterior horn of the medial meniscus in the human knee. It could be a starting point to help surgeons to perform more anatomical procedures.
Evidence Level: IV
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