Gulan Leo, Kovačević Miljenko, Žauhar Gordana, Jurdana Hari, Gulan Gordan
Clinic for Orthopedic Surgery Lovran, Lovran, Croatia.
Department of Orthopedics and Physical Medicine, Faculty of Medicine, University of Rijeka, Rijeka, Croatia.
Surg Radiol Anat. 2025 Apr 7;47(1):118. doi: 10.1007/s00276-025-03628-6.
This study assesses the positioning of the lateral intercondylar ridge (LIR) and the anterior cruciate ligament (ACL) femoral insertion area (FIA) in relation to the femoral notch roof and the lateral notch wall and examines its correlation with the width of the posterior notch outlet.
45 dried femurs underwent 3D scanning. A cutting plane was established to divide the intercondylar roof from the condylar wall based on three points. The length of the LIR on the roof and wall were measured, along with the distances from key landmarks. The total ACL-FIA and the areas on the roof and wall of the intercondylar notch were measured.
A significant correlation was found between the LIR position on the roof and the width of the notch. LIR averaged 16.18 mm, with 30.86% on the roof, while ACL-FIA averaged 134.19 mm², with 31.55% on the roof. The width of the posterior notch outlet was averaged at 24.34 mm. The distance between the most proximal part of the LIR and the posterior intercondylar line averaged 4.87 mm and 12.46 mm to the most proximal and deepest point of the cartilage border of the lateral femoral condyle.
This study confirms that approximately 30% of the LIR and ACL-FIA extend to the intercondylar notch roof, with a significant moderate positive correlation with the width of the posterior notch outlet. These findings highlight the need to consider the notch roof in the placement of the femoral tunnel for improved anatomical reconstruction of the ACL.
本研究评估外侧髁间嵴（LIR）和前交叉韧带（ACL）股骨附着区（FIA）相对于股骨髁间窝顶和外侧髁间窝壁的位置，并研究其与髁间窝后出口宽度的相关性。
对45具干燥股骨进行三维扫描。基于三个点建立一个切割平面，将髁间窝顶与髁壁分开。测量髁间窝顶和壁上LIR的长度，以及与关键标志点的距离。测量ACL-FIA的总面积以及髁间窝顶和壁上的面积。
发现髁间窝顶上LIR的位置与髁间窝宽度之间存在显著相关性。LIR平均长度为16.18mm，其中30.86%位于髁间窝顶，而ACL-FIA平均面积为134.19mm²，其中31.55%位于髁间窝顶。髁间窝后出口的宽度平均为24.34mm。LIR最近端与髁间后线之间的距离平均为4.87mm，与外侧股骨髁软骨边界最近端和最深点的距离平均为12.46mm。
本研究证实，约30%的LIR和ACL-FIA延伸至髁间窝顶，与髁间窝后出口宽度存在显著的中度正相关。这些发现强调了在放置股骨隧道时需要考虑髁间窝顶，以改善ACL的解剖重建。
