The Researches Of Knee Stability And Proprioceptive Function With Remnant Preservation Anterior Cruciate Ligament Single-bundle Reconstruction

Objective: The aim of this study was to observe the improvement in knee stability and proprioceptive function after anterior cruciate ligament reconstruction with a single bundle of preserved remnant in comparison to non-preserved remnant anterior cruciate ligament reconstruction.Methods: Patients with unilateral anterior cruciate ligament injury of the knee,aged 18-45 years old,admitted to the inpatient department of Jiangsu Provincial Hospital of Traditional Chinese Medicine from January 2020 to December 2020,preoperative KT-2000 test and Pivot-shift test were performed,all patients underwent anterior cruciate ligament reconstruction using autologous hamstring tendon combined with I.D.E.A.L positioning technique.The test group with type 3anterior cruciate ligament remnant preservation the anterior cruciate ligament remnant preservation(remnant fiber preserved group)and the control group without anterior cruciate ligament remnant preservation(non-remnant fiber preserved group).The recovery of knee stability and proprioception on the operated side was studied by the KT-2000 test Pivot-shift test at 3,6 and 12 months postoperatively and the Y-Balance test at 12 months postoperatively.Results: The final 39 subjects were followed up and there was no statistical difference in gender,age and time of injury among the 39 subjects(p > 0.05).KT-2000 test results were lower in the remnant preservation group than in the non-remnant preservation group at 3,6 and 12 months postoperatively,but not statistically different(P > 0.05).KT-2000 test results were statistically significantly lower in the remnant preservation group than in the non-remnant preservation group at3 month(P=0.009 < 0.01)and 12 months(P=0.016 < 0.05).KT-2000 test results were not statistically different in the remnant preservation group than in the non-remnant preservation group at preoperative and 6 months postoperative Statistically different(p > 0.05).The results of the pivot-shift test were lower in both remnant preservation group and non-remnant preservation group at 3,6 and 12 months after surgery than before surgery,but not statistically different(P > 0.05),and there was no statistical difference between the remnant preservation group and non-remnant preservation group before surgery and at 3,6 and 12 months after surgery(P > 0.05).There was a significant difference between the Y-Balance test in the remnant preservation group and the non-remnant preservation group at 12 months postoperatively(P=0.000< 0.01).Conclusion: anterior cruciate ligament single-bundle reconstruction with preserved remnant provides significant improvements in knee stability and proprioception at least twelve months post-operatively,with some advantages in terms of anterior stability and proprioception compared to non-remnant preservation reconstruction surgical techniques.