While these studies begin to describe the complex relationship and the risk of ACL reconstruction on the ALMR insertion, further investigation of how the 2 insertions interact is necessary to understand and define the 3-dimensional relationship between these 2 structures. To further understand the quantitative anatomy of the insertion relationship, LaPrade reported that, on average, 41% of the ACL insertion area and 63% of the ALMR insertion area overlapped with one another. Microscopic studies of the tibial insertion site have been previously conducted to investigate quantities of fibrocartilaginous zones to relate biomechanical properties of the insertion however, the authors are unaware of any study that has microscopically evaluated the fibrocartilaginous insertion of the tibial insertion with respect to the ALMR insertion, particularly in the sagittal and coronal planes.
Therefore, the purpose of this study was to investigate the microstructural relationship between the tibial ACL and ALMR insertions using scanning electron microscopy (SEM) in the coronal and sagittal planes. It was hypothesized that a significant portion of the ACL would overlap the ALMR insertion in both the coronal and sagittal planes.
Full Article: Overlap Between Anterior Cruciate Ligament and Anterolateral Meniscal Root Insertions