Preoperative And Postoperative Study On The Gait Analysis Of Meniscus Injury By Arthroscopic Surgery

Purpose:In previous research,the study on gait characteristics of meniscus injury is still not much.In this study,the gait data of meniscus injury patients before and after surgery were compared with the control group;The gait abnormality of both lower limbs was analyzed.We explore the biomechanical characteristics of meniscus injury patients before and after surgery in order to improve the gait data of meniscus diseases and provide data support for the further application of gait analysis technique in meniscal diseases diagnosis and treatment and postoperative rehabilitation.It also provides reference for the standardization of gait analysis of knee joint disease.Methods: The experimental group was 40 middle-aged men with unilateral meniscus injury who was prepared to perform arthroscopic meniscus.First,we collect the gait data of the patients group before operation and the control group.Three months after the operation,we collect the gait data of the patients group again.With the help of The data of stride length,step height,ground stress,gait period,elevation Angle,elevation Angle,swing speed,step Angle,we can analyzed The gait characteristics of the two lower limbs before and after operation.Results:1.After meniscus injury,the stride length decreased significantly,But the postoperative step recovery is good,and it is near normal gait.2.In terms of step height,the preoperative step height of the sick limb was significantly reduced,and there was no obvious abnormality in the health lower limb,and the postoperative limb height was close to normal.In terms of ground stress.The preoperative injured limb was significantly reduced,and the health limb was compensatory increased.The difference between the two legs was significantly reduced after surgery,However,compared with normal gait,the ground stress of the sick limb was still small.3.Before the operation,the injured lower limb support was shortened and the health limb support was extended.The difference in lower limbs was reduced after operation,But the sick limb support was still lower than that of the health limb.the injured lower limb flat foot period was prolonged and the extension period wasshortened before the operation.There was no statistical difference between the experimental group and the control group in the flat foot period and extension period after the operation,and no statistical difference was found during the landing period.4.Before the operation,both the elevation of the injured limb and the health limb decreased,and the injured limb decreased significantly.The elevation of the lower extremity was approximately normal after surgery.5.Before the operation,the swing speed of the injured limb was significantly reduced,and the health limb was compensatory increased.The improvement of the swing speed was obvious after surgery,but the injured limb was still lower than that of health.No statistical difference was found in the step angle.6.Before the operation,The gait stability,symmetry and starting ability were all significantly decreased,and the three indexes improved obviously after surgery.Conclusions: There were significant differences in the kinematics index,biomechanical index and comprehensive evaluation data between the preoperative injured limb,preoperative health limb and the control group.After the operation,the gait of the meniscus injury patients was significantly improved,but there were still abnormalities in step height,ground stress,support phase and swing speed.In view of the results of this experiment,more in-depth studies can be carried out to provide data support for the further application of gait analysis technology in the process of meniscus disease diagnosis and treatment and postoperative rehabilitation process.