Knee pain when bending is a common issue. It may happen when squatting, walking downstairs, kneeling, or even after sitting for long periods.
In many cases, the discomfort is caused by irritation, overuse, or muscle imbalance rather than a serious injury. Understanding the possible causes can help you decide what to do next.
Common Causes of Knee Pain When Bending
Patellar Tracking Issues
The kneecap may not move smoothly over the joint when bending. This can create pressure and discomfort at the front of the knee.
Tendon Irritation
Overuse from running, cycling, or gym training can irritate the patellar tendon, causing pain when bending or loading the knee.
Tight Muscles
Tight quadriceps or hamstrings can increase stress on the knee joint and make bending uncomfortable.
Cartilage Irritation
Repeated stress can irritate cartilage under the kneecap, especially if movements are repetitive.
When Should You Be Concerned?
- Severe swelling
- Locking or catching
- Knee giving way
- Sharp pain after injury
If these symptoms occur, medical assessment is recommended.
What You Can Try
Rest from painful movements
Gentle stretching
Ice after activity
Gradual strengthening exercises