Early Assessment on Bone Tunne of Anterior Cruciate LigamentI Reconstruction by Three-Dimen-sional Compute Tomography

Abstract：Objective To evaluate three-dimensional compute tomography of early effect on one single bund lean terior cruciateligament(ACL)reconstruction of the knee joint and the clinic alvalue.Methods Anterior cruciate ligament recon-struction by anteromedial portal technical( AM)was used to repair 46 patients of ACL injury in our hospital from February 2014 to January 2015. After 2~7 days,the following measurements were observed through 3D-CT:the bone tunnel in tibia and femur,the bone anatomical landmark,the Endobutton,the bone block,interference screw fixing,materials in bone tunnel. Re-sults Three-dimensional compute tomography could clearly show joint cruciateligamentreconstructivesurgerygrafts,femoral and tibial tunnels and fixation screws,etc. All operation incisions were healed inⅠstage without infection. Preoperative and postoperative Lysholm scores were recorded,postoperative knee joint activity were observed. The patients were followed up 1,3 and 6 months. The Lysholm score for the operated knees were(52. 51 ± 9. 26)and(67. 70 ± 7. 78),respectively before and after operation(t=13.87,P<0.001).Conclusion Three-dimensional compute tomography can provide useful information for clinics and be served as an important approach for early follow-up after anterior cruciate ligament reconstruction due to its accurate display of graft shape,bone tunnel and the locations of internal fixation. It is an important method for anterior cruciate ligament reconstruction surgery assessment to provide more accurate imaging method for clinical evaluation.