Yes, RA can definitely cause swelling behind the knee. One specific condition that can occur is called a Baker's cyst - these are fluid-filled bumps that form when knee swelling causes extra fluid to drain to the back of the knee. This can happen even if the swelling isn't visibly obvious from the outside. Common symptoms Show Full Answer
Yes, RA can definitely cause swelling behind the knee. One specific condition that can occur is called a Baker's cyst - these are fluid-filled bumps that form when knee swelling causes extra fluid to drain to the back of the knee. This can happen even if the swelling isn't visibly obvious from the outside. Common symptoms include:
- Difficulty bending the knee
- Pain and stiffness
- Joint locking or popping
- Warmth around the knee area
- Instability when putting weight on it
Many myRAteam members report experiencing "knife-like pain and tightness" when trying to bend their knees, along with inflammation that isn't always visible externally. If you're experiencing these symptoms, it's important to discuss them with your healthcare provider to prevent potential complications or joint damage.
July 21, 2025
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