What causes soreness and swelling in the knee joint?

Acidic swelling in the knee joint may be caused by physiological factors or pathological conditions such as arthritis, synovitis, etc. Appropriate management should be selected based on the specific cause. The detailed analysis is as follows:

I. Physiological Factors

If excessive physical activity causes stretching of ligamentous tissues around the knee joint, recovery can be achieved through rest and appropriate massage.

II. Pathological Factors

1. Knee Arthritis

If local soft tissues are irritated due to knee arthritis, medications such as celecoxib capsules, glucosamine hydrochloride capsules, or flurbiprofen gel patches may be used under medical guidance to reduce inflammation and relieve pain. Also, avoid strenuous exercise to prevent further knee joint damage.

2. Synovitis

If impaired blood return around the joint results from synovitis, intra-articular injections of sodium hyaluronate injection, triamcinolone acetonide injection, or compound betamethasone injection may be administered as prescribed. Additionally, physical therapies such as ultrashort wave or microwave therapy may be performed under medical supervision to improve local blood circulation, promote repair of damaged tissues, and enhance absorption of inflammation. If the affected synovial tissue has necrotized and the above treatments prove ineffective, surgical options such as radiofrequency ablation or synovectomy may be considered upon physician recommendation.

Other possible causes include lower extremity varicose veins, meniscus injury, gout, etc. It is recommended to maintain proper knee joint care in daily life to minimize joint damage.