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Knee numbness, or paresthesia, can be caused by a variety of injuries, illnesses, and conditions. Trauma to the area may also cause numbness or tingling. Some illnesses or conditions that may result in numbness include diabetes, lupus, and gout. Nerve damage and injuries, such as strains, sprains, or torn ligaments, might also be the cause. Other common causes of this condition include bursitis, tendinitis, and a dislocated kneecap.
One of the most common causes of knee numbness is an injury to the knee or leg. Injuries may include strains, sprains, torn ligaments, fractures, or overstretched muscles. In these instances, the knee numbness will generally disappear as the injury heals. If it persists, however, a physician should be consulted to determine if extensive injury has occurred. Knee surgery may be required in some instances.
Poor blood circulation is another common cause of knee numbness. In some instances, poor circulation might be due to a lack of nutrition. Proper circulation might be restored through eating a healthy diet. Certain diseases, such as diabetes or lupus, may also be the underlying cause of poor blood circulation and knee numbness. Blood circulation should improve with proper treatment of the illness, and numbness in the knee should subside.
Bursitis and tendinitis are two other common causes of knee numbness and tingling. Tendinitis is caused by inflammation of the tendons around the knee. It is most often the result of aging, overuse, or injury. Bursitis occurs when the bursa, a fluid-filled sac that cushions the joints of the knee, becomes inflamed. Gout, injury, arthritis, and overuse are common causes of bursitis.
A dislocated kneecap can also cause nerve damage and knee numbness. Most often, a dislocated kneecap is the result of an injury or excessive pressure on the knee. It can also occur when a sudden shift in direction is made while running or walking. In severe cases, knee surgery may be required to relocate the kneecap.
Knee numbness is easily treated the majority of the time. The specific treatment required often depends upon the underlying cause. In more complex instances, such as cases resulting from diabetes, lupus, or a dislocated kneecap, more extensive treatments or therapy may be required. If an individual is frequently experiencing numbness in the knee or a tingling feeling is present for a prolonged period of time, a physician should be consulted to determine if a more serious condition or illness is the underlying cause.