• J Orthop Surg Res · Jul 2016

    Meta Analysis

    Liposome bupivacaine for pain control after total knee arthroplasty: a meta-analysis.

    • Zhong Qing Wu, Ji Kang Min, Dan Wang, Yong Jian Yuan, and Heng Li.
    • Department of Orthopedics, The First People's Hospital of Huzhou, 158 Guangchang hou road, Huzhou, Zhejiang Province, 313000, China.
    • J Orthop Surg Res. 2016 Jul 22; 11 (1): 84.

    BackgroundTotal knee arthroplasty (TKA) is associated with intense and long-duration pain. Research is currently being conducted on the use of liposome bupivacaine (LB) to prolong the effects of local infiltration anesthesia. This systematic review and meta-analysis of randomized controlled trials (RCTs) evaluated the efficacy and safety of pain control of using LB versus placebo after TKA.MethodsIn April 2016, the Medline, Embase, PubMed, Cochrane Controlled Trials Register (CENTRAL), Web of Science, Google database, and Chinese Wanfang databases were searched to identify articles that compare a LB group versus a control group for pain control after TKA. This systematic review and meta-analysis were performed according to the PRISMA statement criteria. The primary endpoint was the visual analogue scale (VAS) score after TKA at 24, 48, and 72 h. The second outcome was nausea complications, which represent morphine-related side effects. Stata 12.0 software was used for the meta-analysis.ResultsFive studies involving 574 patients met the inclusion criteria. The meta-analysis revealed that LB can decrease the VAS score at 24 h (mean difference (MD) = -0.50; 95 % CI -0.97 to -0.04; P = 0.034), 48 h (MD = -0.26; 95 % CI -0.71 to 0.19; P = 0.256), and 72 h (MD = -0.26; 95 % CI -0.71 to 0.19; P = 0.256). There was no significant difference with respect to the length of hospital stay (MD = -0.08; 95 % CI -0.28 to 0.13; P = 0.475). Furthermore, LB can reduce the occurrence of nausea (RR = 0.38; 95 % CI 0.18 to 0.79; P = 0.009).ConclusionsBased on the current meta-analysis, LB as a novel anesthetic formulation administration following TKA demonstrated better pain control; however, the sample size was limited, and further RCTs are needed to identify the effects of LB after TKA.

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