Effects of different anaesthetic techniques on postoperative pain following arthroscopic knee surgery

Abstract Objective We aimed to evaluate the safety and efficacy of intra-articular (IA) magnesium (Mg) for postoperative pain relief after arthroscopic knee surgery. Methods We searched PubMed, Embase, Medline, Cochrane library, and Web of Science to identify randomized controlled trials that compared postoperative pain outcomes with or without IA Mg after knee arthroscopy. The primary outcomes were pain intensity at rest and with movement at different postoperative time points and cumulative opioid consumption within 24 h after surgery. Secondary outcomes included the time to first analgesic request and side effects. Results In total, 11 studies involving 677 participants met the eligibility criteria. Pain scores at rest and with movement 2, 4, 12, and 24 h after surgery were significantly lower, doses of supplementary opioid consumption were smaller, and the time to first analgesic requirement was longer in the IA Mg group compared with the control group. No significant difference was detected regarding adverse reactions between the groups. Conclusions Intra-articular magnesium is an effective and safe coadjuvant treatment for relieving postoperative pain intensity after arthroscopic knee surgery. Protocol registration at PROSPERO: CRD42020156403.

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Analgesic Effect of Dexamethasone after Arthroscopic Knee Surgery: A Randomized Controlled Trial

Pain Research and Management ◽

10.1155/2016/4216469 ◽

2016 ◽

Vol 2016 ◽

pp. 1-6

Author(s):

Jairo Moyano ◽

Maria García ◽

Maria Caicedo

Keyword(s):

Postoperative Pain ◽

Pain Intensity ◽

Knee Surgery ◽

Controlled Study ◽

Opioid Use ◽

Arthroscopic Knee Surgery ◽

Randomized Controlled ◽

Significant Difference ◽

Intraoperative Period ◽

Arthroscopic Knee

Background.Dexamethasone is sometimes used as a coanalgesic because of its anti-inflammatory properties.Objective. To evaluate opioid use, postoperative pain intensity, and side effects after a single dose of dexamethasone in patients undergoing arthroscopic knee surgery.Methods. In this randomized controlled study patients were randomized to receive either 10 mg of intravenous dexamethasone (DM group) or 0.9% normal saline (NS group) during the intraoperative period. Primary outcomes were pain intensity and total morphine and codeine use after surgery.Results. Seventy-eight patients were included in the study. The DM group showed statistically significant higher pain intensity at the fourth postoperative hour (DM: 3.96/10, standard deviation [SD] 0.54; NS: 2.46/10, SD 0.45;p=0.036). No statistically significant difference in total opioid use (morphine plus codeine) was identified with 15.9 (SD 1.97) codeine tablets used in DM group and 20 (SD 2.14) in NS group (p=0.25).Discussion. Pain intensity tended to decrease in both groups suggesting morphine as the main source of analgesia.Conclusions. Intravenous dexamethasone during the intraoperative period has no clinical impact on postoperative pain intensity during the first 48 h after arthroscopic knee surgery. This trial is registered withR000020892.

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