Chinese Journal of Clinical Anatomy ›› 2023, Vol. 41 ›› Issue (5): 505-510.doi: 10.13418/j.issn.1001-165x.2023.5.01

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Study on anatomical parameters of low tibial tunnel in posterior cruciate ligament reconstruction based on 3D surgical simulation technology

Chen Sijie1.2, Guo Laiwei1, Wang Zunlin1.2, Tan Nian1.2, Zhang Kangrui1.2, Yun Xiangdong1, Xia Yayi1.2, Teng Yuanjun1.2*   

  1. 1. Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou 730030, China; 2. The Second Clinical Medical College, Lanzhou University, Lanzhou 730000, China
  • Received:2022-09-05 Online:2023-09-25 Published:2023-10-16

Abstract: Objective     To establish the low tibial tunnel based on the posterior cruciate ligament (PCL) 3D virtual technology to measure its anatomical parameters.    Methods    CT image data of 101 patients with healthy knee joints were selected, and PCL 3D virtual surgery model was established by using mimics21.0 (Materialise, Belgium) software. Low tibial tunnels of anteromedial and anterolateral approaches were established respectively. The anatomical parameters included the length of the posterior cruciate ligament tibial tunnel (LTT), the 3D included angle between tibial medial axis extension line and tibial plateau (3D ATPT) and perpendicular distance of the tunnel’s entry point to the tibial plateau (PTT). SPSS 25.0 was used for statistical analysis.    Results   The average length of PCL tibial tunnel was greater in the anteromedial group than the anterolateral group was (45.56±4.27) mm versus (43.93±4.10) mm, P<0.05. The average 3D angle between tunnel and tibial plateau was greater in the anterolateral than the anteromedial (54.49±5.81)° versus (48.17±6.12) °, P<0.05. The PTT in the anteromedial group and the anterolateral group were (61.86±6.80) mm and (63.51±6.32) mm, respectively (P<0.05). All the above parameters had statistical differences.   Conclusions    The parameters related to the low tibial tunnel measured in this study can provide theoretical reference for PCL reconstruction surgery in clinical practice.

Key words: Posterior cruciate ligament; ,  , 3D surgical simulation; ,  , Knee joint; ,  ,  Tibial tunnel

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