Faraj W. Abdallah

Was not provided for this article.

Background Hip arthroscopy is an increasingly common outpatient surgical procedure where postoperative pain can be severe. Peripheral nerve blocks have been evaluated for analgesia following hip arthroscopy; however, there is no consensus on an optimal technique that provides effective local anesthetic-based postoperative analgesia without motor blockade. We hypothesized that the pericapsular nerve group (PENG) block would provide effective motor-sparing analgesia following ambulatory hip arthroscopy. Methods We conducted a randomized placebo-controlled double-blind trial comparing an ultrasound-guided PENG block with 20 mL of 0.5% ropivacaine to a control with a sham injection. Our primary outcomes were cumulative opioid consumption (oral morphine equivalent) and quality of recovery (QoR-15) scores at 24 hours postoperatively. Secondary outcomes included pain, postoperative opioid consumption, time to first analgesic request, postanesthesia care unit (PACU) length of stay, and opioid and block-related side effects. Results 94 patients were included (47 per group). QoR was similar between groups at 24 hours as measured by the QoR-15 (range 0–150, higher scores indicate better recovery): mean SD 96.8±20.9 in the PENG group versus 101.0±20.9 in the control group (mean difference −4.2; adjusted p=0.414). Opioid consumption at 24 hours was also similar between groups. In adjusted analyses, the PENG group required less opioid analgesia in the PACU (mean difference −9.5 MME; p=0.039) and had a shorter PACU stay (mean difference −20.5 min; p=0.027). Pain scores at rest and on movement decreased over time in both groups, with no consistent differences in overall pain trajectories. Opioid consumption at 48 hours, opioid-related adverse effects and block-related complications were similar between groups. Conclusions When administered preoperatively, the PENG block provides only modest early perioperative benefits without improving overall postoperative analgesia or QoR in patients undergoing ambulatory hip arthroscopy. Based on these findings, routine preoperative use of the PENG block for ambulatory hip arthroscopy cannot be recommended beyond standard multimodal analgesia, although it may be considered selectively to facilitate early PACU recovery in carefully chosen patients. The potential role of postoperative PENG block as a rescue intervention warrants further investigation. Trial registration number NCT03449680 ; https://clinicaltrials.gov/study/NCT03449680

Background Used to suppress inflammation, preoperative corticosteroid exposure is common among patients undergoing total knee arthroplasty (TKA). New preclinical evidence links corticosteroid exposure to developing chronic pain, which may lead to long-term opioid treatment. We aimed to explore whether there is an association between preoperative corticosteroid exposure and persistent opioid requirements in previously opioid-naïve patients undergoing TKA. Methods In an exploratory retrospective cohort study, we searched a nationwide USA claims database for patients who were opioid-naïve and underwent primary TKA between January 2010 and October 2022. Our primary objective was to explore the magnitude of any association between preoperative corticosteroid claims (oral/parenteral/intra-articular) and postoperative opioid prescription claims at 3 months using multivariable logistic regression. Our secondary objective was to explore the association at 6 months. Results The matched cohort included 763,530 patients who were opioid-naïve; of those, 27,510 did and 736,020 did not have preoperative corticosteroid claims within 30 days of TKA. At 3 months, 5,015 patients (18.2%) had corticosteroid and opioid claims, while only 95,230 (12.9%) without corticosteroid claims had opioid claims (P < 0.001). Similarly, at 6 months, 2,425 patients (8.8%) had corticosteroid and opioid claims, while only 49,712 (6.8%) without corticosteroid claims had opioid claims (P < 0.001). The odds ratio (confidence interval [CI]) for opioid claims at 3 and 6 months among patients with corticosteroid claims were 1.34 (95% CI, 1.30 to 1.38; P < 0.001) and 1.20 (97.5% CI, 1.15 to 1.25; P < 0.001), respectively. Conclusions Our exploratory retrospective cohort study suggests that, after accounting for other potential covariates, patients who were previously opioid-naïve and who were exposed to preoperative corticosteroids may have greater odds (or risk given the low incidence) of persistent opioid claims at 3 and 6 months after TKA. This association may have important clinical implications and requires validation through further observational and randomized studies.

Background: Periarticular local infiltration analgesia has become an important mainstay of multimodal analgesia after elective total hip arthroplasty (THA). However, the role of novel motor-sparing fascial plane blocks—with or without periarticular local infiltration analgesia—has not been fully elucidated for patients undergoing THA. The authors conducted a network meta-analysis evaluating the relative analgesic effectiveness of motor-sparing fascial plane blocks (quadratus lumborum, erector spinae, and pericapsular nerve group blocks) and periarticular local infiltration analgesia for adult patients undergoing THA. Methods: Randomized trials examining single-injection quadratus lumborum, erector spinae, or pericapsular nerve group blocks, or periarticular local infiltration analgesia, for THA were sought. The primary outcome was area under the curve (AUC) rest pain scores during the period from 0 to 24 h. Secondary outcomes included rest pain scores at 0, 6, 12, and 24 h; postoperative function at 6, 12, and 24 h; analgesic consumption at 0 to 24 h; incidence of opioid-related side effects; and incidence of block-related complications. Network meta-analysis was performed using a frequentist approach. Results: A total of 44 trials (3,579 patients) evaluating the quadratus lumborum block, erector spinae block, pericapsular nerve group block, or periarticular local infiltration analgesia for THA were considered. Network meta-analysis was used to derive the probability of each intervention being the most effective as compared to the others (P score). For AUC 0 to 24 h rest pain, periarticular local infiltration analgesia was the most effective intervention, as demonstrated by a P score of 89%. For postoperative analgesic consumption, the quadratus lumborum block was the most effective intervention, with a P score of 88%. This was followed by the pericapsular nerve group block (74%), the erector spinae block (38%), and periarticular local infiltration analgesia (42%). Conclusions: Periarticular local infiltration analgesia alone provides the most consistent improvements in postoperative rest pain, analgesic consumption, and functional recovery after THA. The addition of a quadratus lumborum block or pericapsular nerve group block to periarticular local infiltration may further improve analgesic outcomes.

Background: Both perineural and intravenous dexamethasone have been proposed as effective adjuncts that prolong the duration of peripheral nerve blocks. The authors sought to explore whether combining systemic with perineural dexamethasone yields any additive or synergistic effect on the characteristics and analgesic effects of peripheral nerve blocks. Methods: Adult patients having distal radius open reduction and internal fixation and/or carpometacarpal arthroplasty under supraclavicular block were randomized to intravenous dexamethasone, a combination of perineural plus intravenous dexamethasone, or no dexamethasone (control). Sensory block duration was set as the primary outcome. Secondary outcomes included motor block duration; postoperative rebound pain scores as well as worst pain at 8, 16, 24, 32, 40, and 48 h; opioid consumption at 0 to 24 and 25 to 48 h; incidence of nausea/vomiting; and presence of burning sensation in the blocked limb at 24 and 48 h. The null hypothesis was lack of difference in sensory block duration between the three groups. Results: A total of 104 patients were included in the analysis (intravenous dexamethasone, 37; intravenous plus perineural dexamethasone, 34; control, 33). Compared to intravenous dexamethasone alone, adding perineural dexamethasone did not yield any incremental benefits in any of the outcomes examined. The mean ± SD of sensory block duration was 21.3 ± 7.3 h in the intravenous dexamethasone group, 20.6 ± 6.1 h in the perineural plus intravenous group, and 16.8 ± 6.8 h in the control group. The mean difference (95% CI) of sensory block duration was significantly prolonged by 4.5 h (95% CI, 1.3 to 7.7; P = 0.006) in the intravenous dexamethasone group and 3.8 h (95% CI, 0.8 to 6.8; P = 0.015) in the perineural plus intravenous dexamethasone group compared to control; however, no difference was observed when the two dexamethasone groups were compared to each other (0.7 h [95% CI, –2.5 to 3.9]; P = 0.670). Compared to control, both intravenous and intravenous plus perineural dexamethasone similarly reduced 24-h pain scores and opioid consumption and decreased incidence of rebound pain. Conclusions: The authors’ findings suggest that intravenous dexamethasone alone is sufficient to improve analgesic outcomes for patients receiving supraclavicular block for upper extremity surgery. Combining the intravenous and perineural dexamethasone routes does not yield an additive or synergistic effect on the characteristics and analgesic effects of supraclavicular block.