Background
postoperative pain, fractures, quadratus lumborum block, a trunk nerve block
COMPLICATIONS, OSTEOPOROSIS
Hip fractures are more common in older people due to osteoporosis. It is estimated that around six million patients worldwide will suffer hip fractures annually by 2050 as the population ages [Based on the expert consensus of the Chinese Association of Anesthesiologists, multimodal analgesia is recommended to alleviate postoperative pain, reduce complications, and improve postoperative recovery quality. As a trunk nerve block, quadratus lumborum block (QLB) has been widely used for postoperative analgesia in patients undergoing abdominal and lower limb surgeries [