Fascia iliaca compartment block for postoperative pain after total hip arthroplasty: a systematic review and meta-analysis of randomized controlled trials oleh Mona Muhe Eldeen Eshag, Lina Omar Mahmoud Hasan, Salem Elshenawy, Mennatallah Samir Ahmed, Abd El-moneam Emad Mostafa, Yomna Ali Abdelghafar, Yusuf Jasim Althawadi, Najwa Medhat Ibraheem, Helmy Badr, Yossef Hassan AbdelQadir