Patellofemoral syndrome; Knee pain - chondromalacia
- A grating or grinding sensation when the knee is flexed (moved so that the ankle is brought closer to the back of the thigh)
Knee painin the front of the knee that occurs when you get up after sitting for a long period of time
- Knee pain that worsens when you use stairs or get out of a chair
- Knee tenderness
Signs and tests
The doctor will perform a physical examination. The knee may be tender and mildly swollen, and the kneecap may not be perfectly lined up with the femur (thigh bone).
When you flex your knee, you may feel a grinding sensation below the kneecap. Pressing the kneecap when the knee is straightening out may be painful.