| ASA | American Society of Anesthesiologists |
| FRAIL | Fatigue, Resistance, Ambulation, Illness, and Loss of Weight |
| RFT/TL | Rectus femoris thickness/thigh length |
| SD | Standard deviation |
| STAR | Sonographic Thigh Adjustment Ratio |
| TMT/TL | Total muscle thickness/thigh length |
| USG | Ultrasonography |
| VIT/TL | Vastus intermedius thickness/thigh length |
| BMI | Body mass index |
| CDC | Clavien–Dindo Classification |
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