Preoperative oral administration of Shenjiangqing drink to promote enhanced recovery in the perioperative period of total knee arthroplasty: a prospective, randomized controlled trial protocol.

INTERVENTION: Experimental Group:Take the ginseng and ginger drink orally 3 hours before surgery.;Control Group:Take Shunengqing drink orally 3 hours before surgery.; CONDITION: Orthopedic‐related diseases PRIMARY OUTCOME: Christensen Fatigue Scale; SECONDARY OUTCOME: Fatigue Scale FS‐14;Insulin Resistance Inde X(HOMA‐IR);Gastric ultrasound measurement of the gastric antrum area.;WHO Nausea and Vomiting Grading;hemoglobin;Serum transferrin;Prealbumin (PA);C‐reactive protein (CRP);Superoxide Dismutase; INCLUSION CRITERIA: 1. Patients diagnosed with OA (knee osteoarthritis) according to the diagnostic criteria published by the American Rheumatism Association (ARA) in the "Diagnostic Criteria for Knee Osteoarthritis," and who meet the diagnostic standards of traditional Chinese medicine during the perioperative period. 2. Patients of any gender, aged between 50 and 75 years, who have been assessed and are scheduled to undergo unilateral total knee arthroplasty (TKA). 3. All patients are operated on by the same surgical team and anesthesiologist, using the same prosthetic implant and endotracheal intubation anesthesia. 4. Patients who voluntarily participate in this trial and sign the informed consent form.