Abstract: BACKGROUND: Early rehabilitation intervention is beneficial for the functional recovery after total knee arthroplasty. Mobilization with movement can alleviate the postoperative pain and improve the knee function to maximal extent. 
OBJECTIVE: To explore the effect of mobilization with movement on the early dysfunction and joint function after posterior stabilized total knee arthroplasty. 
METHODS: Seventy patients with fixed-bearing posterior stabilized total knee arthroplasty from May 2017 to April 2020 in Shunde Hospital of Southern Medical University were randomly divided into control group and treatment group. The patients in the control group were given rapid rehabilitation intervention, while those in the treatment group were subjected to mobilization with movement combined with rapid rehabilitation intervention. The western Ontario and McMaster universities osteoarthritis index and the hospital for special knee surgery scores were compared between the two groups 1 day, 2 and 4 weeks after total knee arthroplasty.  
RESULTS AND CONCLUSION: (1) At 2 and 4 weeks postoperatively, the indicators of the two groups of patients were significantly improved compared with those 1 day after treatment, and the difference was significant (P < 0.05). All indicators except muscle strength of the hospital for special knee surgery scores were significantly different in both groups at 2 and 4 weeks after total knee arthroplasty (P < 0.05). (2) At 2 and 4 weeks postoperatively, the pain, function, range of motion, stability, flexion deformity and total scores of the hospital for special knee surgery in the treatment group were significantly higher than those in the control group. Western Ontario and McMaster universities osteoarthritis index and the reduction project scores of the hospital for special knee surgery scores were significantly lower in the treatment group than those in the control group (P < 0.05). (3) The results suggest that mobilization with movement combined with rapid rehabilitation intervention can improve the functional recovery at early phase after total knee arthroplasty.   

Key words: joint, total knee arthroplasty, mobilization with movement, fixed-bearing, posterior stabilized, rapid rehabilitation, muscle strength