Flowable Gelatin for Reducing Blood Loss and Improving Recovery After Knee Replacement Surgery: A Clinical Study

INTERVENTION: Fluid‐Free Gelatin Total Knee Arthroplasty Group:No fluid gelatin used.;Fluid Gelatin Total Knee Arthroplasty Group:Using Fluid Gelatin; CONDITION: Knee osteoarthritis PRIMARY OUTCOME: Total Perioperative Blood Loss; SECONDARY OUTCOME: complication; INCLUSION CRITERIA: 1. For individuals aged 50 to 85 (inclusive)—based on Western medical diagnostic criteria for knee osteoarthritis—they fall within the assessment scope designated for this specific age demographic. 2. X‐ray imaging assessments conducted over a six‐month period revealed that the patient's lesions fell within Kellgren‐Lawrence grades III to IV. 3. Undergoing Primary Unilateral Total Knee Arthroplasty; 4. ASA Anesthesia Classification: Classes I to III; 5. Capable of understanding the research content and signing the informed consent form.