(HealthDay News) -- Your thighbone has a v-shaped notch that accommodates your kneecap. If the groove is too narrow or shallow, the knee cap can become unstable and dislocate.
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The American Academy of Orthopaedic Surgeons says symptoms of an unstable kneecap include:
- A buckling knee joint that can't support your weight.
- A kneecap that seems to slide to the side during movement.
- Pain in the front of your knee that worsens when you're moving.
- Stiffness, swelling or pain when you sit down.
- Cracking or creaking noises in your knee while you move.
-- Diana Kohnle
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