EFFICACY OF DIFFERENT ANALGESIC METHODS DURING THE POSTOPERATIVE REHABILITATION EXERCISES UNDERGOING TOTAL KNEE ARTHROPLASTY

Objective:To observe the effect of different analgesic methods on postoperative rehabilitation pain after total knee arthroplasty(TKA) surgery in the medium and the early to middle recovery period. Methods: 80 adult patients, ASA I-II, diagnosed as Knee Osteoarthritis undergoing TKA surgery were randomly divided into two groups: group FA and NS. Group FA received continuous femoral nerve block analgesia the first three days after operation with 0.2% Ropivacaine and 0.2% Ropivacaine administerd 10 ml twice a day 30 minutes before the functional training; group NS received continuous femoral nerve block analgesia the first three days after operation with 0.2% Ropivacaine and normal saline 10 ml twice a day 30 minutes before the functional training. VAS Pain scores were obtained at rest and during continuous passive motion(CPM), the degree of the continuous passive motion, complications and the KSS score 8 weeks after the surgery were assessed and recorded. Results:TheVAS pain scores of FA group during the CPM were lower than the NS group and achieved a greater range of motion during CPM. The time to achieve the target of discharge(90°) was significantly in FA group. There were no significant different difference increase in the occurrence of nausea and vomiting, nor in KSS scores 8 weeks after the surgery. Conclusion:The femoral nerve block on postoperative rehabilitation pain after total knee arthroplasty(TKA) surgery reduces pain scores during the CPM in movement, and a greater range of motion without additional complications. Continuous femoral nerve block may shorten the length of hospital stay for the patient and reduce time needed in achieving the discharge target. Thereby this is a satisfactory pain management choice during the rehabilitation stage of total knee arthroplasty surgery.