Objective  To observe the effect of anterior cruciate ligament reconstruction combined with anterior lateral ligament reconstruction on treating anterior cruciate ligament injury with high-grade pivot-shift.

  Methods  A total of 78 patientswith anterior cruciate ligament injury admitted to the hospital were enrolled in the study, and were divided into control group and combined group by random number table method, with 39 cases in each group. The control group was given anterior cruciate ligament reconstruction, while the observation group was given anterior cruciate ligament reconstruction combined with anterior lateral ligament reconstruction. The stability grading, knee range of motion, recovery of muscle strength, change of Lysholm scoring and surgical safety were compared between the two groups.

  Results  There were no significant differences in stability grading, limited angle of knee flexion, limited angle of knee extension, atrophy index and Lysholm score between the two groups before the surgery (P>0.05). The stability of the combined group was significantly higher than that of the control group after the surgery (P < 0.05). The limited angle of knee flexion, limited angle of knee extension and atrophy index were significantly decreased in both groups after the surgery, and the above indexes in the combined group was significantly lower than those in the control group (P < 0.05). The Lysholm scores of the combined group at 1, 3 and 5 months after the surgery were significantly higher than those of the control group (P < 0.05). There was no significant difference inthe total incidence of complications after the surgery between the two groups (P>0.05). Conclusion The curative effect of anterior cruciate ligament reconstruction combined with anterior lateral ligament reconstruction is significant for the treatment of patients with anterior cruciate ligament injury with high-grade pivot-shift, which plays a positive role in improving joint stability, knee range of motion and recovery of muscle strength, and has higher safety.