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.
Knee Sprain. What is a Knee Sprain: When one of the four knee ligaments overstretches which tears. Symptoms: knee ligament pain, swelling, instability, difficulty bending and straightening the knee. Causes: force through the knee or sudden twisting. Treatment: PRICE, exercises.ere we will look at the most common causes of a knee sprain and which ligament tends to be affected: 1) ACL Sprain: Sudden twisting or hyperextension (the knee bending back too far). 2) PCL Sprain: Force through a bent knee e.g. a fall onto a bent knee, car accident where the knee hits the dashboard.