The Effect Of Flexi-bar Exercise Therapy On The Mid-Term Rehabilitation After Anterior Cruciate Ligament Reconstruction

Objective: The purpose of this paper is to study the effect of Flexi bar exercise therapy on the mid-term rehabilitation after anterior cruciate ligament reconstruction.By observing the differences of isokinetic force,proprioception and activation time of hamstring muscle between Flexi bar exercise therapy and routine exercise rehabilitation group,we can understand the improvement of knee function of ACLR patients by Flexi bar exercise therapy,and confirm the effect of Flexi bar exercise therapy on knee function of ACLR patients in the middle stage of rehabilitation.Methods: Twenty patients with ACL reconstruction underwent exercise rehabilitation intervention three times a week for six weeks,and were divided into 10 Flexi bar exercise therapy experimental group and 10 routine exercise rehabilitation control group.Isomed 2000 isokinetic tester and Delsys trigno wireless EMG system were used to measure isokinetic force,proprioception of knee joint and surface electromyography of hamstring before and after the intervention.Results: 1.The PT of quadriceps femoris and hamstring muscle in the two groups after intervention was higher than that before intervention,which indicated that the training of 6 weeks had a promoting effect on the improvement of muscle strength of related muscle groups,and the growth of quadriceps femoris was larger than that of hamstring muscle.After the intervention,the H / Q of the affected side was lower than that before the intervention,but the H / Q of the affected side was slightly higher than that of the healthy side.After the intervention,the limb symmetry index of quadriceps femoris and hamstring muscle strength in the two groups increased,but there was still a gap between the healthy side and the affected side,indicating that the muscle strength training of weak side related muscle groups should be continued to achieve the balance of bilateral muscle strength.There was no significant difference between the two groups(P > 0.05).2.In the proprioception test of knee joint,there was no significant difference in the control group before and after the intervention(P > 0.05).There was a significant difference between the experimental group and the pre intervention group(P < 0.05).There was a very significant difference between the experimental group and the pre intervention group(P < 0.01).There was significant difference between the experimental group and the control group(P < 0.05)at 30 ° and very significant difference at 60 °(P < 0.01).Compared with the control group,the experimental group had smaller error,with statistical difference(P < 0.05).3.The activation time of biceps femoris(BF)and Semitendinosis(ST)in hamstring activation time test: the activation time of BF and ST in both sides of the control group decreased,but there was no significant difference(P > 0.05).The activation time of BF and ST in experimental group decreased significantly after intervention compared with that before intervention(P < 0.01).The activation time of BF and ST in the experimental group was significantly lower than that in the control group(P < 0.05).Conclusion:1.Flexi bar exercise therapy has no obvious advantage over conventional exercise rehabilitation group in improving muscle strength.2.Flexi bar exercise therapy can significantly improve the proprioception of knee joint.3.Flexi bar exercise therapy can effectively shorten the response time of hamstring activation in patients after operation.4.Flexi bar exercise therapy can be used as an important part of ACLR patients’ rehabilitation.It has a good rehabilitation effect and is worthy of clinical promotion.