[Clinical efficacy of double-bundle and double-tunnel enhanced reconstruction in the treatment of anterior cruciate ligament injury].

Objective: To explore the clinical efficacy of double beam double tunnel enhanced reconstruction technique in the treatment of knee anterior cruciate ligament(ACL) training injuries.

Methods: Twenty-nine cases of ACL injury of knee joint from January 2021 to December 2021 were retrospectively analyzed. All the cases were underwent ligament reconstruction surgery. Cases were grouped by surgical technique:there were 14 patients in conventional reconstruction group, including 13 males and 1 female, aged from 22 to 31 years old with an average of (27.07±7.28) years old, autogenous hamstring tendon was used for ligament reconstruction. There were 15 patients in the enhanced reconstruction group, including 13 males and 2 females, aged from 25 to 34 years old with an average of (29.06±4.23) years old, double tunnel ligament reconstruction, the autogenous hamstring muscle was used as the anteromedial bundle, and the posterolateral bundle was replaced by a high-strength line. The difference between knee tibial anterior distance, Lysholm score, International Knee Literature Committee (IKDC) subjective score, Tegner motor level score and visual analog scale (VAS) at 6th and 12th months after the surgery, limb symmetry index (LSI) were recorded at the last follow-up and surgery-related adverse effects during follow-up.

Results: All patients were followed up, ranged from 13 to 15 months with an average of (13.7±0.8) months. There were no serious adverse reactions related to surgery during the period. There was no statistical difference between the preoperative general data and the observation index of the two groups (>0.05). The difference in tibial anterior distance at 6 and 12 months in the enhanced reconstruction group (1.45±0.62) mm and (1.74±0.78) mm which were lower those that in the conventional reconstruction group (2.42±0.60) mm and (2.51±0.63) mm(<0.05). There was no significant difference in postoperative Lysholm score, Tegner motor level score, IKDC score, VAS, and limb symmetry index at the last follow-up(>0.05).

Conclusion: The enhanced reconstruction technique can more effectively maintain the stability of the knee joint and has no significant effect on the postoperative knee joint function compared with the traditional ligament reconstruction technique. The short-term curative effect is satisfactory, and it is suitable for the group with high sports demand.