Cho Won-Joon, Kim Jong-Min, Kim Dong-Eun, Lee June-Goo, Park Jun-Woo, Han Yong-Hee, Seo Hyun-Gi
Bonbridge Hospital, Investigation performed at the University of Ulsan College of Medicine, Seoul, South Korea.
Asan Medical Center, Investigation performed at the University of Ulsan College of Medicine, Seoul, South Korea.
Int J Med Robot. 2018 Oct;14(5):e1933. doi: 10.1002/rcs.1933. Epub 2018 Jun 28.
Tunnel misplacement is a common cause of failed anterior cruciate ligament (ACL) reconstruction. In this study, the accuracy of the femoral tunnel position was evaluated in robot-assisted ACL reconstruction using a magnetic resonance imaging (MRI)-based navigation system. We hypothesized that a difference of less than 2 mm between the planned femoral tunnel position and the created one was achievable.
Four cadaveric knees underwent robot-assisted ACL reconstruction. A 3-dimensional model using pre-operative MRI images was used for preoperative planning, and a computed tomography (CT) scan was performed postoperatively. The planned and the created femoral tunnels were compared to assess the accuracy of the femoral tunnel position.
The distance between the intra-articular points of the planned and the created tunnels was 7.78 mm in the first experiment and 1.47 mm in the last one. The difference in tunnel length was 4.62 mm in the first experiment and 0.99 mm in the last one.
Accuracy of the femoral tunnel position improved with each robot-assisted ACL reconstruction using an MRI-based navigation system. In the last experiment, the accuracy of the femoral tunnel position was satisfactory.
隧道位置不当是前交叉韧带（ACL）重建失败的常见原因。在本研究中，使用基于磁共振成像（MRI）的导航系统评估了机器人辅助ACL重建中股骨隧道位置的准确性。我们假设计划的股骨隧道位置与实际创建的位置之间的差异小于2毫米是可以实现的。
对4具尸体膝关节进行机器人辅助ACL重建。使用术前MRI图像建立的三维模型进行术前规划，并在术后进行计算机断层扫描（CT）。比较计划的和实际创建的股骨隧道，以评估股骨隧道位置的准确性。
在第一个实验中，计划隧道与实际创建隧道的关节内点之间的距离为7.78毫米，在最后一个实验中为1.47毫米。隧道长度的差异在第一个实验中为4.62毫米，在最后一个实验中为0.99毫米。
在每次使用基于MRI的导航系统进行机器人辅助ACL重建时，股骨隧道位置的准确性都有所提高。在最后一个实验中，股骨隧道位置的准确性令人满意。
