To summarize the clinical effects of anterior cruciate ligament reconstruction using double-femoral-tunnel method with all-inside and TightRope? techniques.

Retrospective analysis of patients with anterior cruciate ligament ruptures who were hospitalized in the Department of Orthopedics, Tenth People's Hospital of Tongji University from December 2015 to August 2016. According to the inclusion and exclusion criteria, a total of 16 patients (16 knees) were included in the study, 11 males (68.8%), five females (31.3%), and an average age of (30 ± 6) years. Paired sample t-test was performed on IKDC score, Lysholm score and KT2000 value using SPSS13.0 statistical software. Rank data was tested by rank sum test or chi-square test.

Sixteen patients were followed up for 14~32 months with median time of 25.5 months(22.3, 9.6) months. There were no graft re-rupture, TightRope? plate fixation failure, thrombophlebitis, joint infection, and saphenous nerve injury during the follow-up period.The IKDC score and Lysholm score were increased from (67±4)points and (63±6) to the last follow-up (95±5) points and (95±4) points, respectively. The difference was statistically significant (t=-19.40, 16.04; both P<0.01). Preoperative IKDC classification: none of grade A, one case of grade B, one case of grade C, 14 cases of grade D; postoperative: 13 cases of grade A, three of grade B, none of grade C or grade D; (Z=-5.18, P<0.05), and the difference was statistically significant. The KT2000 value was(1.2±0.6) mm after the operation, which was better than the average (5.8±1.3) mm before operation. The difference was statistically significant (t=12.24, P<0.01). Preoperative Lachman test: 15 cases were positive, one case was negative, postoperative: 16 cases were negative; preoperative pivot shift test: 13 cases were positive, three cases were negative, postoperative: 16 cases were negative.

Arthroscopic anterior cruciate ligament reconstruction using all-inside & TightRope? techniques of the femoral double tunnel has satisfactory short-term results of knee joint function, anterior straight instability, and anterior lateral rotation instability.