What causes knee swelling?
May 14, 2024
Source: Cainiu Health
Dr. Xu Shuai
Introduction
Knee swelling may be caused by trauma, synovitis, osteoarthritis, lower extremity varicose veins, rheumatoid arthritis, etc. It is recommended to seek medical attention promptly and receive treatment after identifying the underlying cause. Swelling might result from injuries such as sprains or falls, which can obstruct blood circulation in the knee joint, leading to symptoms like swelling and bruising.
The knee refers to the knee joint. In general, knee joint swelling may be caused by trauma, synovitis, osteoarthritis, lower extremity varicose veins, rheumatoid arthritis, etc. It is recommended to seek medical attention promptly to determine the underlying cause and receive appropriate treatment. Specific analyses are as follows:
1. Trauma
This may result from sprains, falls, or other injuries to the knee joint, leading to impaired blood circulation and causing symptoms such as swelling and bruising. Within the first 24 hours, apply cold compresses using an ice pack or a towel soaked in cold water; after 48 hours, switch to warm compresses with a hot water bottle or warm towel to relieve discomfort.
2. Synovitis
This is usually caused by infection, which easily triggers inflammation of the synovial membrane in the knee joint, resulting in knee swelling, sometimes accompanied by pain and fluid leakage. Treatment may include medications such as methylprednisolone tablets, sodium hyaluronate injection, and celecoxib capsules, used under medical guidance.
3. Osteoarthritis
This is generally caused by degenerative changes in the knee joint, possibly leading to cartilage wear and resulting in discomfort such as swelling, pain, and stiffness. It is recommended to use medications such as glucosamine sulfate tablets, glucosamine hydrochloride tablets, and Gukang capsules under a doctor's supervision.
4. Lower Extremity Varicose Veins
This may be due to impaired venous valve function, potentially causing poor circulation in the lower limbs and leading to symptoms such as knee joint swelling, heaviness in the legs, and edema. If necessary, surgical intervention such as high ligation and stripping of the great saphenous vein may be required under medical guidance to alleviate symptoms.
5. Rheumatoid Arthritis
This is usually caused by abnormal immune function, which may impair local blood circulation and lead to knee joint swelling, morning stiffness, and other discomforts. Medications such as Qingpeng ointment, hydroxychloroquine sulfate tablets, and azathioprine tablets may be used under a doctor’s direction for treatment.
Maintaining healthy lifestyle habits is important, such as going to bed early and waking up early, trying to fall asleep before 11 p.m. each night, avoiding staying up late, and ensuring sufficient sleep.
