Investigation of the Effects of Frailty and Sarcopenia on Postoperative Recovery and Complications in Geriatric Patients

Right thigh length (between the right femur greater trochanter and patella) was measured and recorded while the patients were lying supine. A linear transducer (Philips Affiniti 50, Philips Medical Systems, Seattle, WA, United States) was used for ultrasonographic measurements. The rectus femoris (RF) and vastus intermedius (VI) were visualized with the feather-touch technique after a generous amount of ultrasound gel was sprayed in the center of the right thigh, and the thickness of the muscles was determined and recorded using ultrasonography software. After these measurements, the rectus femoris-to-thigh length ratio (RF/B), vastus intermedius-to-thigh length ratio (VI/B), and total muscle thickness-to-thigh length ratio (T/B) were calculated and recorded.