Health Tip: Feeling Weak in the Knee?

Unstable kneecap occurs when the kneecap slides off the groove at the end of the thighbone.

The American Academy of Orthopaedic Surgeons says typical symptoms include:

• Buckling of the knee and inability to support body weight.
• Kneecap is located off to one side.
• Knee tends to catch when moved.
• Pain at the front of the knee that worsens when you're active.
• Stiffness or swelling in the knee, or pain when sitting.
• Knee makes a cracking or creaking sound when you move.