2.2. Postoperative management
pain
Ankle dorsal, plantar flexion, and quadriceps strength exercises began in the recovery bay. These 4 regions would receive rivaroxaban (10 mg) orally when the drainage was removed at the first 48 postoperative hours. Patients received standard supervised physiotherapy daily, including continuous passive motion, strength training, and walking. After returning to the ward, pain was assessed using a visual analog scale (VAS; 0: no pain, 10: the worst pain imaginable). If VAS scores were between 4 and 6, oxycodone was administered orally at Q8h (10 mg). If pain VAS exceeded 6, 40 mg of Parecoxib (Pfizer, NY) was administered intravenously. The transfusion protocol trigger, according to the agreement which is provided by National Health Commission of People’s Republic of China, was <70 g/L measured at 24 and 72 hours postoperatively.