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Knee Injury
Knee injuries are very common among athletes as well as regular active people and can always be prevented. Ligament tears account for more than forty percent of knee injuries and the posterior cruciate ligament is considered one of the less common injuries. Although it is less common, there are still important measures that can be taken in order to prevent this type of knee injury. Maintaining proper exercise and sport technique is crucial for injury prevention, which include not exceeding the body or not going over the proper range of motion of the knee, properly warming up and cooling down

Quadriceps and Hamstring Ratio
Another important aspect of maintaining an injury free knee is having strong quadriceps and hamstring muscles because they help stabilize the knee. A low hamstring to quadriceps ratio is associated with knee injury and should be about eighty percent. Some exercises to strengthen the quadriceps and hamstring muscles include leg curls, leg lifts, prone knee flexion with resistance band and knee extensions. Some stretches to help prevent injury to the posterior cruciate ligament include stretching of the hamstring muscles by extending the legs, toes pointing up, leaning forward until the stretch is felt and holding for a few seconds.

Exercises and Stretches
In addition, balancing exercises have also been adopted because it has been proven that people with poor balance have more knee injuries than those with good balance. Wobble boards and Bosu balls are very common pieces of equipment used to balance and help prevent knee injuries as long as they are being used with trained personnel. Another possible preventive measure is wearing knee straps to help stabilize the knee and protect it from injury, especially during demanding sports such as football.