“…The controls employed several techniques, including fascia iliaca block (FIB), femoral nerve block (FNB), quadratus lumborum block (QLB), Supra-Inguinal Fascia Iliaca Block (SIFIB), Paravertebral Block (PVB), Lumbosacral Plexus Block (LSPB), Lumbar Erector Spinae Plane Block (LESPB), PCA (Patient-Controlled Analgesia), and PCEA (Patient-Controlled Epidural Analgesia). The sample sizes ranged from 34 to 225 with a total of 1687 patients, and the studies were conducted in seven countries, with the majority being in the USA; ten studies [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ] were conducted in the USA, two [ 26 , 27 ] in Switzerland, two [ 28 , 29 ] in India, two [ 30 , 31 ] in China, two [ 32 , 33 ] in Serbia, one [ 34 ] in Chile, and one [ 15 ] in Egypt. The trials utilized pain scores, including VAS pain scores, NRS pain scores, and opioid consumption, as crucial outcome measures to examine the efficacy of analgesic interventions.…”