Impact of enhanced recovery after surgery on postoperative recovery after joint arthroplasty: results from a systematic review and meta-analysis.

STUDY DESIGN: Systematic review with meta-analysis.

OBJECTIVES: To evaluate the effects of enhanced recovery after surgery (ERAS) on the postoperative recovery of patients who underwent total hip arthroplasty (THA) or total knee arthroplasty (TKA).

METHODS: The PubMed, Embase, Cochrane and ISI Web of Science databases were searched to identify literature including randomised controlled trials (RCTs), cohort studies and case-control studies through 2 May 2018. The analysed outcomes were mortality rate, transfusion rate, range of motion (ROM), 30-day readmission rate, postoperative complication rate and in-hospital length of stay (LOS).

RESULTS: A total of 25 studies involving 16 699 patients met the inclusion criteria and were included in the meta-analysis. Compared with conventional care, ERAS was associated with a significant decrease in mortality rate (relative risk (RR) 0.48, 95% CI 0.27 to 0.85), transfusion rate (RR 0.43, 95% CI 0.37 to 0.51), complication rate (RR 0.74, 95% CI 0.62 to 0.87) and LOS (mean difference (MD) -2.03, 95% CI -2.64 to -1.42) among all included trials. However, no significant difference was found in ROM (MD 7.53, 95% CI -2.16 to 17.23) and 30-day readmission rate (RR 0.86, 95% CI 0.56 to 1.30). There was no significant difference in complications of TKA (RR 0.84, 95% CI 0.34 to 2.06) and transfusion rate in RCTs (RR 0.66, 95% CI 0.15 to 2.88) between the ERAS group and the control group.

CONCLUSIONS: This meta-analysis showed that ERAS significantly reduced the mortality rate, transfusion rate, incidence of complications and LOS of patients undergoing TKA or THA. However, ERAS did not show a significant impact on ROM and 30-day readmission rate. Complications after hip replacement are less than those of knee replacement, and the young patients recover better.

LEVEL OF EVIDENCE: Level 1.