What's the cause/treatment of my knee pain?About 6 months ago, I went to get up out of a chair and my knee popped. I went to the ER and they said that it was too swollen with too much fluid in the xray to really see anything. They never looked at it again, just told me to rest/ice/elevate. Which I did. Now 6 months later I'm still having at times severe knee pain and knee buckling. I can't stay on it for more then an hour or so. Any advice? Thank you so much!
- Adrista
Arthritis of the Knee
The most common types of arthritis are:
•Osteoarthritis (OA)—sometimes called degenerative arthritis because it is a "wearing out" condition involving the breakdown of the cartilage that cushions the knee, much like a tire gradually wears and loses its tread. When the cartilage eventually wears away completely, the bones rub against each other, causing pain and stiffness. OA usually occurs in people over age 50.
•Rheumatoid Arthritis (RA)—a disease that causes the synovium to become thickened and inflamed. In turn, too much abnormal synovial fluid is produced within the joint space, which causes a chronic inflammation that damages the cartilage. This eventually results in cartilage loss, pain, and stiffness.
•Post-traumatic Arthritis—can develop after a serious knee injury. Knee fracture or severe laxity of the ligaments from injury may lead to degeneration of the articular cartilage, causing excess wear, pain, and reduced function in the joint over time.
Ligament Injuries
A plague of many athletes and weekend warriors, anterior cruciate ligament injuries—sometimes innocently referred to as a knee "sprain"—are commonly associated with sports activities.
Of the 4 major ligaments found in the knee, the ACL and MCL are the most susceptible to damage, often as a result of changing direction rapidly, twisting, decelerating, or landing from a jump. The PCL can be damaged when the knee is hit front-on or an athlete makes a simple misstep on the playing field, landing with all body forces at the tibial tubercle (bony prominence at the top of the tibia).
Tendon Injuries and Disorders
Knee tendon injuries range from tendinitis (an inflammation of the tendon) to a ruptured (torn) tendon. Inflammation can result from overuse of the tendon, such as during cycling or running, or from repeated strain and impact, such as during basketball. A rupture can occur most commonly when a degenerative tendon (tendonous) undergoes excessive strain as can happen when a person tries to make a cut or break a fall. This often affects the long-term athlete whose tendons may be degenerative because of repetitive "microtrauma."
Osgood-Schlatter disease is a condition characterized by an overuse traction stress reaction of the tibial tubercle growth plate pulled upon by the patellar tendon. Usually caused by repetitive stress, the condition most often occurs in the teenage athlete who is still growing; in some cases, the growth plate may be injured so much that it tears away from the tibia and takes a fragment of bone and growth plate.
Another overuse condition is Iliotibial Band Syndrome. The iliotibial band is a strip of connective tissue that inserts into the upper part of the tibia after a long course from the pelvis. As the knee bends and extends, this band repeatedly rubs over the outer bone of the knee, which can cause the tendon and intervening structures to become inflamed.
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