Abstract: Objective To investigate the effect of suspension training（SET）on three⁃dimensional motion
symmetry of both knees after anterior cruciate ligament reconstruction. Methods 44 patients after anterior cruci⁃
ate ligament reconstruction were included and randomly divided into SET group（n = 22）and control group（n =
22）. The control group received routine rehabilitation training，while the SET group combined suspension training
on the basis of routine rehabilitation training. Suspension training was conducted twice a week for 6 consecutive
weeks. The infrared motion capture system，isokinetic muscle strength test system and balance ability test system
were used to evaluate the motor ability of the two groups of patients before and after the intervention. Results Af⁃
ter training，the difference of relative anterior⁃posterior translation in the SET group was significantly reduced
（Z = -3.186，P = 0.001），and the difference was smaller than that in the control group（Z = -2.044，P = 0.041）.
In the SET group，the strength index of the knee flexion and extension were significantly increased（t = 7.231，P <
0.001 and t = 4.359，P < 0.001）. The difference of average trace error index between the two lower limbs were sig⁃
nificantly reduced in SET group（Z = -3.627，P < 0.001）. Conclusion Suspension training can further improve
the three⁃dimensional motion symmetry of knee joint after anterior cruciate ligament reconstruction.

Key words: anterior cruciate ligament reconstruction, suspension training, motor function, symmetry