QIAN Yuenan,DONG Yilong,JIANG Gangyi, et al. A radiographic study of the femoral tunnel of the anatomy reconstruction of the anterior cruciate ligament[J]. JOURNAL OF WEZHOU MEDICAL UNIVERSITY, 2014, 44(8): 596-.
Abstract：Objective: To investigate the position of femoral tunnel anatomy reconstruction of the anterior cruciate ligament (ACL), and offer radiology data for tunnel angle selection and assessment of bone tunnel after ACL anatomy reconstruction. Methods: 30 adults’ cadaveric knee specimens were used, containing knee at least 20 cm or so, except for obvious degeneration, deformity and joint injuries, including 13 cases of males and 17 cases of females. Among them 11 cases were left side and 19 cases were right side, aging from 24 to 65 years, 37.3 years on the average. A K wire was passed in the tunnel and radiographs obtained. These radiographs were then evaluated in coronal and sagittal planes and alpha, beta (α, β) angles calculated for each of those. The α was defined as the angle between the axis of the femoral tunnel and the joint line. The β was defined as the angle between the axis of the femoral tunnel and the femoral long axis. The external aperture of femoral tunnel (OMF) was defined as the meeting point of K-wire and lateral cortex of the femur. The position of the OMF was evaluated in relation to the rectangle and the coordinate axis. The rectangle was defined using Bernard’s method and the origin of the coordinate axis was defined as lateral epicondyle of femur (LEF). The distance between the OMF and LEF in sagittal plane, defined the far-near direction as long axis of femur and the front - rear direction as perpendicular to long axis of femur. Results: The mean α in coronal plane was (49.5±4.6)°, the mean β in the sagittal plane was (31.3±3.1)°. The external aperture of femoral tunnel (OMF) was all located outside of the rectangle. The external aperture of femoral tunnel located in near lateral epicondyle of femur (3.16±2.51) mm, and front (4.25±2.16) mm. Conclusion: Anatomy reconstruction of the anterior cruciate ligament femoral tunnel outer approach do not interfere with reconstruction of the posterolateral corner. Genuflex at 120° and AMP approach to reconstruct ACL can get satisfying angle in both sagittal and coronal plane.
