Why Is Only One Knee Swollen?
Swelling in a single knee can be concerning, particularly when the other knee appears completely normal. While bilateral knee swelling often suggests a systemic condition such as rheumatoid arthritis, unilateral swelling typically indicates a localized issue.
Common causes include:
- Injuries such as ligament sprains, meniscus tears, or fractures
- Bursitis, often due to repetitive stress or prolonged pressure
- Baker’s cysts, which can form as a result of underlying joint conditions
- Inflammatory conditions like gout or pseudogout
- Infections, including septic arthritis, which require immediate medical attention
In some cases, localized arthritis or tendonitis may affect only one knee, particularly if the joint has been previously injured or overused.
When to Seek Medical Attention:
Prompt evaluation is recommended if the swelling is sudden, severe, painful, accompanied by fever, or does not improve with rest and home care.
Initial Self-Care:
For mild swelling, the RICE method—Rest, Ice, Compression, and Elevation—can be helpful, along with over-the-counter anti-inflammatory medications.
Monitoring your symptoms and addressing issues early can prevent complications and support a quicker recovery.
