Preoperative Muscle Stiffness, Functional Reserve, and Postoperative Quality of Recovery in Lower Extremity Arthroplasty

In elderly patients undergoing arthroplasty surgery, postoperative recovery quality is closely related to preoperative physical reserve. Sarcopenia and reduced muscle quality can increase postoperative complications. This prospective observational study aims to investigate whether preoperative Handgrip Strength (HGS) and muscle stiffness measured by Shear Wave Elastography (SWE) can predict the quality of recovery at postoperative 24 hours (assessed via the Quality of Recovery-15 \[QoR-15T\] score) in patients aged 60 and older undergoing elective total knee or hip arthroplasty.