The Effect Of Vibration Training On Proprioception And Gait After Knee Anterior Cruciate Ligament Reconstruction

Objective: After injury to the Anterior Cruciate Ligament(ACL)of the knee,the kinematic motor function is limited,the patient's proprioceptive sensation decreases,and abnormal gait occurs.Most patients will choose to perform ACL reconstruction,but after reconstruction,the patient is unable to fully recover to normal levels in terms of knee body proprioception and gait.Patients undergoing ACL reconstruction will undergo conventional rehabilitation for rehabilitation.In this study,vibration training is combined with routine rehabilitation training to study the effects of vibration training on proprioception and gait after ACL reconstruction.The rehabilitation provides an auxiliary method.Methods: Sixteen patients were selected after the reconstruction of the anterior cruciate ligament of the knee joint from the Sports Hospital attached to the Chengdu Institute of Physical Education.Male or female was not allowed.All of them signed the Informed Consent before participating in the experiment.Sixteen patients were randomly divided into control and experimental groups,with 8 patients in each group.The control group only performed routine rehabilitation training,and the experimental group began the additional vibration training from the 25 th week on the same basis as the normal rehabilitation training.Specific training methods: The frequency of vibration was selected as low frequency 30 Hz,and vibration amplitude was 3mm,training for 8 weeks,exercise 3 times per week,30 min each time(each group lasted 20 s,rest 10 s,total 60 groups).In the pre-training,4 weeks after training and 8 weeks after training,the test data of proprioception and gait index data were collected and analyzed.Results: Proprioception intra-group comparison results: The mean deviation of the affected side of the control group at 20° and 70° was significantly higher than that of the healthy side(P < 0.01).In the experimental group,the total average deviation of the affected side was greater than that of the healthy side at 70°.The difference was highly significant(P < 0.01),and there was no statistically significant difference in other angles.Proprioception comparison between groups: Compared with the control group,there was a significant difference between the experimental group and the control group at 20°,70°,and 100°(P < 0.01).Compared with the control group,the affected side of the experimental group had highly significant differences at 70° and 100°(P < 0.01),and there was no significant difference at 20°.Gait parameter ground reaction force group comparison results: In the control group,the ground reaction force(FX,FY and FZ)on the affected side and the healthy side was compared before training,4 weeks after training,and 8 weeks after training.There was no significant difference between the X,Y and Z directions before training(P>0.05).The ground reaction force(FX,FY and FZ)on the affected side and the healthy side of the experimental group were compared before the training,4 weeks after the training,and 8 weeks after the training.There was no significant difference between the X and Y directions compared with those before training(P>0.05),and the results of the Z direction were significantly different from those before the training(P<0.05).Gait parameter ground reaction force comparison results between groups: In the control and experimental groups,the healthy side and healthy side ground reaction forces(FX,FY,and FZ)were compared between groups before training,4 weeks after training,and 8 weeks after training.There was a significant difference between the X direction(P<0.01),and there was no significant difference between the Y and Z directions before the training(P>0.05).The healthy side and affected side ground reaction forces(FX,FY and FZ)of the control group and the experimental group were compared before the training,4 weeks after the training,and 8 weeks after the training.There was a significant difference in the X direction compared to the pre-training(P<0.01),and significant differences in the Y and Z directions compared to the pre-training(P<0.05).Conclusion: Routine rehabilitation training is also beneficial for proprioception of patients after ACL reconstruction.Patients must adhere to training.Vibration training can improve the proprioception of patients after ACL reconstruction,but the improvement of proprioception at different angles during different training periods is different.Through vibration training,after the ACL reconstruction,the patient's force in different directions will change.It will also affect the weight and ability of the lower limb supporting the patient during walking,the driving and braking ability of the supporting leg,and the ability and stability of the side load.This improves the patient's gait.