Anteromedial and posterolateral graft kinematics of a double‐bundle ACL reconstruction: a 3D computer simulation. Issue 1 (27th January 2015)

• Record Type: Journal Article
• Authors: Liu, Xudong; Li, Jing‐Sheng; Hosseini, Ali; Gill, Thomas J.; Li, Guoan
• Is Part Of: International journal of medical robotics and computer assisted surgery. Volume 12:Issue 1(2016)
• Page Start: 96
• Page End: 101
• Publication Date: 2015-01-27
• Subjects: ACL -- double‐bundle ACL reconstruction -- anatomical ACL reconstruction; Robotics in medicine -- Periodicals; Surgery -- Technological innovations -- Periodicals; Imaging systems in medicine -- Periodicals; 617.90285
• DOI: 10.1002/rcs.1645
• Languages: English
• ISSNs: 1478-5951

Abstract

Abstract: Background: The posterolateral graft has been reported to fail more frequently than the anteromedial graft in double‐bundle ACL reconstructions. This study investigated the graft kinematics using a 3D modelling technique. Methods: Twenty subjects performed a stair‐ascending activity under dual fluoroscopy surveillance. A double‐bundle ACL reconstruction was simulated on those healthy knees using an anteromedial portal technique. The graft–tunnel interaction was described using the graft–tunnel angle and the range of the graft–tunnel edge contact (GTEC). Results: The femoral graft–tunnel angle of the anteromedial/posterolateral graft was 97.6 ± 7.5/100.7 ± 7.7° and the tibial graft–tunnel angle was 158.8 ± 6.5/146.5 ± 8.9° at knee extension. The femoral GTEC ranges were 23.2 ± 5.3–28.1 ± 7.6° for both grafts and the tibial GTEC ranges were 27.3 ± 2.2–34.5 ± 2.1° during stair‐ascending. Conclusion: The femoral graft–tunnel angle was larger than on the tibial side and the GTEC angles influenced the PL graft more, implying that grafts may experience a less optimal biomechanical environment at the femoral tunnels. Copyright © 2015 John Wiley & Sons, Ltd.