A Clinical Study on Establishing Acupuncture Diagnosis and Treatment Guidelines for Early to Mid-Stage Knee Osteoarthritis Based on Provincial TCM Master Physicians' Expertise

INTERVENTION: Acupuncture group:Oral administration of Celecoxib capsules 0.2g once daily (qd) for 1 week, combined with acupuncture therapy.;Western Medicine Group:Oral Celecoxib Capsules 0.2g once daily for 1 week.;Sham acupuncture group:Orally take Celecoxib capsules 0.2g once daily for 1 week, in combination with sham acupuncture therapy.; CONDITION: Knee Osteoarthritis PRIMARY OUTCOME: WOMAC score;Lysholm Score; SECONDARY OUTCOME: SF‐12v2 Score; INCLUSION CRITERIA: Patients early to mid‐stage knee osteoarthritis: (1) aged 50‐75 years; (2) pain duration >1 month; (3) X‐ray KL grading I‐II or MRI indicating cartilage damage classified as Recht 0‐II; (4) no prior treatment within the month preceding enrollment.