Details of block technique and analgesic regimens used in included studies
| Author/year | Preincisional analgesia | Surgical anesthesia | Supplemental postoperative analgesia | ACB characteristics | ||||
| Single shot ACB block timing | Timing of catheter initiation; Duration of infusion | Localization | Assessment of block success | ACB local anesthetic bolus | ||||
| Shah34 2015 | N/S | Spinal | Local infiltration analgesia; IV diclofenac sodium 75 mg q8h or IV paracetamol 1000 mg q8h; IV tramadol 50 mg prn | Postoperative | Postoperative; 48 hours | USG | Yes | 30 mL 0.75% ropivacaine |
| Li32 2017 | PO celecoxib 200 mg two times per day for 2 days | Spinal | PO celecoxib 200 mg two times per day; IM pethidine hydrochloride 50 mg prn | Postoperative | Postoperative; 48 hours | USG | N/S | 30 mL 0.25% ropivacaine+Epi |
| Lee31 2018 | PO acetaminophen 975 mg once 1 hour before | Spinal | Periarticular infiltration analgesia; PO hydromorphone or oxycodone q3h prn; IV Ketorolac 15 mg q8h prn; PO Acetaminophen 975 mg q6h; PCA hydromorphone | Postoperative | Postoperative; 48 hours | USG | N/S | 20 mL 0.50% ropivacaine±Dex |
| Zhang37 2018 | PO celecoxib 400 mg for 3 days or PO Acetaminophen | GA | Local infiltration analgesia; IV Parecoxib 40 mg IV q12h; IV Pethidine Hydrochloride 50 mg prn | Preoperative | Postoperative; 24 hours | USG | Yes | 20 mL 0.50% ropivacaine |
| Canbek27 2019 | N/S | Spinal | IV diclofenac sodium 75 mg q8h or IV Paracetamol 1000 mg q8h; IV Tramadol 50 mg prn | Postoperative | Postoperative; 24 hours | USG | N/S | 30 mL 0.25% bupivacaine |
| Elkassabany28 2019 | IV fentanyl 50 μg prn | Spinal or GA | Periarticular infiltration analgesia or local infiltration analgesia; PO acetaminophen 1000 mg q8h; PO Celecoxib 200 mg q12h; PO Gabapentin 300 mg q8h; PO Oxycodone 5–15 mg q6h prn; IV opioids prn | Preoperative | Postoperative; 24 or 48 hours | USG | Yes | 20 mL 0.5% ropivacaine for single shot ACB; 17–18 mL 0.5% ropivacaine for continuous ACB |
| Kim29 2019 | None | GA | Local infiltration analgesia; IV Tramadol 50 mg prn; IV Fentanyl 100 μg q12h prn Fentanyl PCA (for single shot ACB) | Preoperative | Intraoperative; NS | USG | NS | 20 mL 0.5% ropivacaine |
| Lyngeraa33 2019 | PO paracetamol 1000 mg and PO celecoxib 400 mg 1 hour before surgery | Spinal | Local infiltration analgesia; PO Paracetamol 1000 mg q6h; PO Ibuprofen 400 mg q8h; IV morphine prn; PCA morphine | Postoperative | Postoperative; 48 hours | USG | Yes | 20 mL 0.75% ropivacaine |
| Turner36 2018 | PO acetaminophen 1000 mg once; PO Celecoxib 400 mg once; PO pregabalin 150 mg once; IV Fentanyl prn | Spinal or GA | Posterior-capsule infiltration; PO Acetaminophen 1000 mg q6h; PO celecoxib 200 mg q12h; PO oxycodone q4h prn; IV Hydromorphone q2h prn | Preoperative | Postoperative; 48 hours | USG | Yes | 20 mL 0.25% bupivacaine+Clonidine + Buprenorphine+Dex + Epi for single shot ACB; 20 mL 0.25% bupivacaine+Epi for continuous ACB |
| Lam30 2020 | PO etoricoxib 90 mg 1 hour before surgery | Spinal or Combined Spinal-Epidural | Local infiltration analgesia; IV tramadol prn; PCA fentanyl; oral analgesics (N/S type) | Postoperative | Postoperative; 72 hours | USG | N/S | 4–6 mL 1% ropivacaine |
| Tak35 2020 | PO celecoxib 200 mg and PO Gabapentin 300 mg 10 hours before surgery | Spinal | IV paracetamol 1000 mg q8h for 3 days then PO paracetamol 1000 mg q8h; PO Gabapentin 300 mg once daily for 4 weeks; PO Oxycodone prn; IV Morphine prn | N/S | N/S; 48 hours | USG | N/S | 20 mL 0.2% ropivacaine |
ACB, adductor canal block; GA, general anesthesia; h, hour; IV, intravenous; max, maximum; N/S, not specified; PCA, patient-controlled analgesia; PO, per oral; prn, as needed; q, every; USG, ultrasound guidance.