RT Journal Article SR Electronic T1 #35888 Pain management in ambulatory arthroscopic anterior cruciate ligament reconstruction: a retrospective observational study JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP A260 OP A260 DO 10.1136/rapm-2023-ESRA.490 VO 48 IS Suppl 1 A1 Giménez, Gerard Moreno A1 Prieto, Mireia Rodríguez A1 Martín-Ortega, Miguel A1 Vallejo, Andrea Rivera A1 Sacristán, Sergio Núñez A1 Alós, Raúl Hernández A1 Torruella, Roc Montoliu A1 Tenas, Sergi Sabaté YR 2023 UL http://rapm.bmj.com/content/48/Suppl_1/A260.2.abstract AB Please confirm that an ethics committee approval has been applied for or granted: Yes: I’m uploading the Ethics Committee Approval as a PDF file with this abstract submission Application for ESRA Abstract Prizes: I don’t wish to apply for the ESRA PrizesBackground and Aims Anterior cruciate ligament reconstruction (ACLR) is associated with moderate to severe postoperative pain, so effective analgesia is necessary for patient satisfaction, early discharge and functional recovery. Although the use of regional techniques is widely accepted, the choice remains controversial. We compare adductor canal block (ACB) versus femoral nerve block (FNB) in our clinical practice.Methods A descriptive observational retrospective study was designed and its approval by IRB was requested (IIBSP-LCA-2023-67). We included 32 patients that underwent ambulatory ACLR between 2021 and 2022 at our hospital. Anaesthetic techniques, time to discharge and postoperative pain (NPRS) were collected.Results The most used anaesthetic technique was spinal anaesthesia combined with ACB (table 1). Peripheral nerve blocks were performed with 0.2% ropivacaine. 68.8% of patients received perineural or intravenous corticosteroids, and all patients received intravenous paracetamol and dexketoprofen before surgical incision. There was no difference between ACB and FNB when pain was measured in the immediate postoperative (NPRS 0.95 vs 1.17; p=0.79) or at 24 hours (NPRS 2.80 vs 3.00; p=0.88) (figure 1). The mean hospital discharge time was 292 minutes (SD=71), with no differences between spinal and general anaesthesia (p=0.31) or between regional techniques (p=0.47).View this table:Abstract #35888 Table 1 Anaesthetic techniquesAbstract #35888 Figure 1 Mean postoperative pain (NPRS)Conclusions ACB and FNB are equally efficacious and the mainstay treatment of postoperative pain after ACLR, as a part of multimodal approach. ACB decreases risk of quadriceps weakness although with low concentration of long-acting local anaesthetic (0.2% ropivacaine) we did not observe prolonged residual motor blockade with FNB. No complications related to regional anaesthesia were reported.Attachment Certificat CEIM.pdf