Why Is One Knee Swollen but Not the Other?
Noticing that only one knee is swollen can be alarming—especially when the other knee feels perfectly fine. While swelling in both knees often points to systemic issues like arthritis, swelling in just one knee usually indicates a localized problem. Understanding the potential causes behind unilateral knee swelling can help you decide whether it’s something minor or a sign you need medical attention.
1. Injury or Trauma

The most common reason for swelling in just one knee is trauma or overuse. You may not even remember the specific moment of injury—especially if it was a repetitive motion injury. Some possible issues include:
- Ligament sprain or tear (ACL, MCL)
- Meniscus tear
- Patellar dislocation
- Fracture or bone bruise
In these cases, swelling often appears within hours and may be accompanied by pain, stiffness, or a feeling of instability in the joint.
2. Bursitis
CONTINUE READING ON THE NEXT PAGE 🥰💕
Lose Weight by Cleansing Your Colon? in 7 Days
How To Make Loafs of corn cheese
Trying Sticky Pork Ribs Recipe
Discover the Magic Drink: A Blend of Banana, Lemon, and Apple to Melt Belly Fat
Man snaps a heartbreaking photo of firefighters taking a rest after 24 hours of working nonstop
While it’s called “Poor Man’s Cubed Steak,” this dish always leaves me feeling like I’ve won the lottery
Always impeccable laundry with the secret button of the washing machine: you never click on it
BEST ITALIAN CRESCENT CASSEROLE RECIPE
DIY Bar Cart