Call for emergency medical help. If you suspect you're having a heart attack, don't hesitate. Immediately call 911 or your local emergency number. If you don't have access to emergency medical services, have someone drive you to the nearest hospital.
The most common causes of knee weakness are osteoarthritis, sprain or strain, and chronic knee pain. Other possible causes, such as injury to the knee, are more rare. Osteoarthritis 22. Sprain or strain 17. Chronic knee pain 15. Knee ligament or meniscus tear 8. Fracture of the leg 4. Bursitis 2.
Of the causes of knee pain, the one you will seldom hear about is chronic dehydration. Actually, a more correct description of the knee pain cause is chronic fluid and electrolyte imbalance. Not enough electrolytes: You are not getting enough minerals and salts in your body where they can do the most good.