Causes of Knee Pain
Thanks to knee replacement surgery,
you can lead an
As one of the body's principal weight-bearing joints, the knee is under constant
strain and can be damaged by excessive or unexpected force. Over time, the
cushion of cartilage can crack and wear away, eventually allowing the bones
to rub together.
The resulting inflammation can cause the knee's synovial
membrane to produce an excess amount of synovial fluid in an attempt to protect
the knee, creating swelling, stiffness, tenderness and chronic pain.
Below are some of the most common causes of knee pain and wear:
Osteoarthritis is a common degenerative condition in which the cartilage that
normally cushions the bones of a joint begins to wear down, allowing the bones
to rub together.
Symptoms include pain, swelling and deformity, all of which
can contribute to loss of motion. You may also suffer from irregular bone
growths, called spurs, which cause pain with even slight movements of the
Although osteoarthritis can affect any joint, the disease typically settles
in the knee, hip, neck, back and fingers. Osteoarthritis is a leading cause
of knee replacements.
Avascular Necrosis (Osteonecrosis)
Total knee replacement may also be recommended in the case of avascular necrosis,
a condition in which decreased blood supply to one of the joint's bones causes
it to die and decay. Avascular necrosis may be caused by a knee fracture or
long-term use of alcohol or steroids.
|Osteoarthritic Knee ||
Necrotic Knee ||Rheumatoid Knee ||Traumatic Knee
Rheumatoid arthritis occurs when the body's immune system mistakenly attacks
the the layer of connective tissue that lines joint cavities (called the
synovial membrane), causing it to swell or become inflamed. The membrane's
response is to produce too much lubricating synovial fluid, which can actually
damage the joint's articular cartilage. The result is chronic pain and stiffness.
The disease can also inflame tissues around tendons, ligaments and muscles.
Within six weeks, most patients are able to return to many of their previous activities
and are wondering why they waited so long to be able to return to their active
Arthritis can also be caused by trauma to the knee - generally a fracture
or other severe injury. Often the knee fails to heal properly, placing extra
stress on the joint. Over time, the articular cartilage is damaged, causing
knee pain and stiffness.
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