Acupuncture and Knee Pain
What is knee pain?
Knee pain is a fairly common complaint among both children and adults.
According to the American Academy of Orthopaedic Surgeons, more than 11
million visits are made to physicians' offices each year because
of a knee or knee-related problem. It is the most often treated anatomical
site by orthopedists, and one of the most oft-examined sites among general
The knee is the largest joint in the body. It is made up of the lower
end of the thighbone (or femur), which rotates on the upper end of the
shinbone (tibia), and the kneecap, which slides in a grove on the end
of the femur. The knee joint also contains several muscles, which straighten
the leg and bend the leg at the knee; tendons, which attach the muscles
to the bones; ligaments, which help control motion by connecting bones;
and cartilage, which serves to cushion the knee or help it absorb shock
Because of its size, and because it is such a complex structure, it is
also one of the most frequently injured joints. Knee injuries can be caused
by several factors. Most complaints of knee pain result from some form
of trauma, such as a torn or ruptured ligament; a broken or fractured
kneecap; torn cartilage; or an accident that causes damage to the area
or strains the knee beyond its normal range of motion. Other conditions
that can lead to knee pain are infections; arthritis; hemarthrosis (blood
in the knee joint); cysts; and bone tumors. Being overweight can also
contribute to knee problems by causing excess strain on ligaments and
Who suffers from knee pain?
Many athletes experience knee injuries, particularly to the knee ligaments.
Nearly everyone has become familiar with the acronym ACL, which stands
for anterior cruciate ligament. ACL tears can be caused by rapidly twisting
or changing directions; slowing down when running; or landing from a jump.
Injuries to the medial collateral ligament (MCL) are usually caused by
contact on the outside of the knee.
Knee pain isn't restricted to professional athletes, however. As
people get older, the amount of cartilage in the knee decreases, and many
ligaments begin to lose some of their elasticity, making them more susceptible
to pain and/or injury.
What can acupuncture do?
Studies have shown acupuncture to be effective in relieving certain types
of knee pain, especially arthritic conditions of the knee and knee joint.
A 1999 study comparing electroacupuncture to ice massage and transcutaneous
nerve stimulation (TENS) for subjects with osteoarthritis found that acupuncture
decreased pain and stiffness levels and increased muscle strength and
flexion in the knee. Another study published that same year suggested
that patients with patellofemoral pain syndrome might benefit from weekly
acupuncture treatments. Smaller studies have confirmed that acupuncture
is beneficial in reducing knee pain, stiffness and physical disability
in patients with knee and knee-related problems. It can ease the discomfort
some subjects feel while waiting for knee surgery, and in some cases,
it may even be considered an alternative to surgery.
As with any other form of care, however, remember that not all patients
will respond to acupuncture. Make sure to discuss the situation thoroughly
with your acupuncturist before undergoing treatment for knee/leg pain
(or any other condition).
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