Analysis Of Changes In Muscle Strength And Motor Function Around The Knee Joint Through Total Knee Arthroplasty

Objective The isokinetic muscle strength test system is used to test and analyze the changes of muscle strength around the knee joint before and after the total knee arthroplasty.The differences among muscle strength before and after the surgery,the healthy limb and the normal muscles were compared.Analyze and evaluate changes in muscle strength and motor function over time after surgery and compare their differences with the healthy side.The influences that total knee arthroplasty has on the on the changes of lower limb motor function and instruct the patient's rehabilitation after the total knee arthroplasty are observed.In that way,we can get the evaluation method that can be used in the clinic.Methods200 patients with advanced knee osteoarthritis that were admitted from June,2018 to June,2019 were chosen in this study.The patient's isokinetic muscle strength test was performed in the first month,the third month,and the sixth month before and after the operation.And the peak force distance of the knee hamstring muscle,quadriceps peak torque(PT value),total work(total work,TW)are mainly measured.Evaluate the knee joint HSS score,the range of motion(ROM)and other knee function standards,and test the healthy limbs and normal people with the same method,use statistical data to analyze and deal with the data,evaluate the the muscle strength and motor function changes with time going on,then compare the differences between the healthy limb.From P<0.05,we can see that the differences have some statistical significance.The influences that of total knee arthroplasty has on motor function changes of lower limbs are also observed.Results Of the 200 patients,162 completed the follow-up time of more than 6 months,and the remaining 38 patients did not complete the follow-up due to various factors.The isokinetic muscle strength test system and the knee joint function scoring standard were used to record the knee joint muscle strength and function changes before and after knee joint replacement.Statistical analysis was performed to show the knee joint hamstring muscle force and quadriceps muscle strength and joint mobility in the first month after the surgery.The knee joint muscle strength and joint mobility were significantly improved after the third month after the surgery,but there are still some differences compared with the peers.The knee function index was significantly improved in the sixth month after operation(P<0.05),and there are no significant differences compared with normal people.Conclusions1.The optimal recovery time of knee joint extension and knee flexion strength after total knee arthroplasty is 3-6 months.2.At the 6th month after total knee arthroplasty,the knee function recovery of the patient is almost normal,and there are no obvious differences compared with normal peers.3.Knee joint strength and knee function after total knee arthroplasty are significantly improved compared with preoperative,which is of great significance for the treatment of knee osteoarthritis.4.The constant velocity muscle strength test system has the advantages of safety,accuracy,repeatability and easy operation.It is a good method to evaluate the knee joint's muscle strength and function after the knee joint replacement.