title: Analgesic effect and safety of single-dose intra-articular magnesium after arthroscopic surgery: a systematic review and meta-analysis.
abstract: To examine the analgesic effect and safety of single-dose intra-articular (IA) magnesium (Mg) after arthroscopic surgery. Pubmed, Embase and Cochrane library were searched through in January 2016. Eight RCTs and eight experimental studies were included. The IA Mg exhibited a significantly lower pain score when compared with placebo (MD, -0.41, 95% CI, -0.78 to -0.05, p = 0.03). There was no significant difference between Mg and bupivacaine in terms of pain relief and the time to first analgesic request. Furthermore, statistically significant differences both in pain score (MD, -0.62, 95% CI, -0.81 to -0.42, p < 0.00001) and time to first analgesic request (MD, 6.25, 95% CI, 5.22 to 7.29, p < 0.00001) were observed between Mg plus bupivacaine and bupivacaine alone. There was no statistically significant difference among the various groups with respect to adverse reactions. Most of the included in vitro studies reported the chondrocyte protective effect of Mg supplementation. There were also two in vivo studies showing the cartilage protective effect of IA Mg. The single-dose IA Mg following arthroscopic surgery was effective in pain relief without increasing adverse reactions, and it could also enhance the analgesic effect of bupivacaine. In addition, Mg seemed to possess the cartilage or chondrocyte protective effect based on experimental studies.
authors.affiliation: Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Zeng
authors.affiliation: Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China.
authors.forename: Yu-Sheng
authors.initials: YS
authors.lastname: Li
authors.affiliation: Health Management Center, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China.|Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan Province, 410008, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Wei
authors.affiliation: Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China.
authors.forename: Dong-Xing
authors.initials: DX
authors.lastname: Xie
authors.affiliation: Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China.
authors.forename: Xi
authors.initials: X
authors.lastname: Xie
authors.affiliation: Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China.
authors.forename: Liang-Jun
authors.initials: LJ
authors.lastname: Li
authors.affiliation: Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China.
authors.forename: Shu-Guang
authors.initials: SG
authors.lastname: Gao
authors.affiliation: Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Luo
authors.affiliation: Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China.
authors.forename: Yi-Lin
authors.initials: YL
authors.lastname: Xiong
authors.affiliation: Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China.
authors.forename: Wen-Feng
authors.initials: WF
authors.lastname: Xiao
authors.affiliation: Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, 410008, China.
authors.forename: Guang-Hua
authors.initials: GH
authors.lastname: Lei
mesh_terms: D000700:Analgesics / Q000627:therapeutic use*; D001182:Arthroscopy; D002045:Bupivacaine / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D007270:Injections, Intra-Articular; D008274:Magnesium / Q000627:therapeutic use*; D008297:Male; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D000700:Analgesics; D008274:Magnesium; D002045:Bupivacaine