Abstract: BACKGROUND: Physiotherapy is very important for the recovery after anterior cruciate ligament reconstruction. In recent years, many doctors are optimizing the physical rehabilitation program after anterior cruciate ligament reconstruction. However, there is still a lack of efficient rehabilitation training after anterior cruciate ligament reconstruction.
OBJECTIVE: To investigate the effect of vibration therapy combined with suspension training on movement and knee joint function after anterior cruciate ligament reconstruction.
METHODS: A total of 80 patients undergoing first unilateral anterior cruciate ligament reconstruction at the Affiliated Sport Hospital, Shanghai University of Sport were randomly divided into vibration therapy group (n=40) and vibration therapy+suspension training group (n=40). In the vibration therapy group, vibration therapy (10 minutes each, once a day, 6 times per week) was performed at the 13th week after anterior cruciate ligament reconstruction. Patients in the vibration therapy+suspension training group were treated with vibration therapy (10 minutes each, once a day, 6 times per week) and suspension training (twice a week) at the 13th week after anterior cruciate ligament reconstruction. Training in each group was performed for 8 weeks. Knee joint function was evaluated by knee joint Lysholm score before and 8 weeks after training. The symmetry index was evaluated by the isokinetic muscle strength evaluation training system. The balance test system was used to evaluate the average trace error difference of the bilateral multi-axes.
RESULTS AND CONCLUSION: Compared with those before training, the knee Lysholm score and the knee extension and flexion symmetry indexes increased 
(P < 0.05), and the average trace error difference decreased after training (P < 0.05). Compared with the vibration therapy group, the knee Lysholm score in the vibration therapy+suspension training group increased (P < 0.05), the knee extension and knee flexion symmetry index increased (P < 0.05), and the average trace error difference decreased (P < 0.05). To conclude, compared with vibration therapy training alone, vibration therapy combined with suspension training can significantly improve knee joint function, increase muscle strength and symmetry, and improve balance stability in patients undergoing anterior cruciate ligament reconstruction.

中国组织工程研究杂志出版内容重点：组织构建；骨细胞；软骨细胞；细胞培养；成纤维细胞；血管内皮细胞；骨质疏松；组织工程

Key words: ">anterior cruciate ligament reconstruction, vibration therapy, suspension training, knee joint function, muscle strength, symmetry, balance stability