Analysis of the early efficacy of intra-articular injection of ropivacaine on postoperative analgesia on the first day after total knee arthroplasty

ObjectiveTo explore the early effect of intra-articular injection of ropivacaine on postoperative analgesia on the first day after total knee replacement.

MethodsEighty patients treated with total knee arthroplasty were randomly divided into the observation group and control group.The observation group and control group were treated with and without intra-articular injection of ropivacaine after the drainage tube was removed on the first day after operation, respectively.The postoperative pain visual simulation score(rest and exercise state), postoperative hospital stay, postoperative first time to the ground, analgesic drug dosage and incision complications were evaluated in two groups.

ResultsAt rest, the area under the visual analogue score curve in observation group for 5 consecutive days after surgery was significantly lower than that in control group(424±32 vs 515±39, P < 0.01).The visual analogue scores of pain at various time points in observation group were significantly lower than those in control group on the first and second day after operation(P < 0.05 to P < 0.01).The length of hospital stay in observation group was significantly lower than that in control group(P < 0.01).The first landing time in observation group was significantly earlier than that in control group(P < 0.01).

ConclusionsThe intra-articular injection of ropivacaine on the first day after total knee arthroplasty is a good analgesic effect on patients, and conducive to recovery.