Introduction to biomechanics


What Is Knee Arthritis?

The most common type of knee arthritis is
Osteoarthritis, degenerative joint disease,Treatment for knee arthritis ranges from
caused by wear-and-tear on the knee joints.simple life changes and medications to
Osteoarthritis causes a progressive wearinginjections at the site and even surgery to
away of the cartilage of the jointcompletely replace the knee. Each patient is
surrounding the knee. When this protectivedifferent and should determine their course
cartilage is worn away by knee arthritis,of treatment with an orthopedist who
bare bone is exposed within the joint. It isspecializes  in  knee  arthritis.
extremely painful and can become so
debilitating that the sufferer can barelySome  basic treatments to begin with include:
stand  or  walk  for  any  length  of  time.
Weight  Loss:
What  Causes  Knee  Arthritis?
Carrying excess weight can cause serious harm
Arthritis of the knee generally afflictsto weakened knee joints by placing undo
patients over the age of 50 who arestress on the knee. Pain can be excruciating
overweight. Genetic predisposition may alsofor obese patients suffering with knee
be a cause of this chronic condition. Otherarthritis.
risk factors that may contribute to
developing  knee  arthritis  include:Activity  Modification:
-Trauma  to  the  knee.Limiting certain activities may be necessary,
and learning new exercise methods may be
-Meniscus  tears  or  ligament  damage.helpful. Those who find it too painful to
exercise, may find aquatic therapy helpful
-Fractures  to  the  bone  around  the joint.since the buoyancy of the water takes away
any stress to the knees and joints while
Symptoms  of  Knee  Arthritis:exercising.
Knee arthritis symptoms tend to progress asWalking  Aids:
the condition worsens and may be exacerbated
by weather changes and stress to the kneeUsing a cane or crutch in the hand opposite
joints. Pain may appear intermittedly, withthe affected knee can help decrease the
pain free weeks or months, followed by verydemand  placed  on  the  arthritic  joint.
painful  flare-ups.
Physical  Therapy:
Some of the most common symptoms of knee
arthritis  include:Decreasing the burden on the knee by
strengthening the muscles around the knee
-Pain  with  activities.joint may help decrease both pain and
swelling. Proper physical therapy can also
-Limited  range  of  motion.help prevent muscle atrophy around the knee,
which is an important part of maintaining
-Stiffness  of  the  knee.functional  use  of  the  knee.
-Swelling  of  the  joint.Occupational  Therapy:
-Tenderness  along  the  joint.Some patients have found short stints of
occupational therapy helpful in learning the
-A  feeling  the  joint  may  "give  out".proper ways to stand, sit, bend, and so forth
once atrophy of the muscles surrounding the
-Deformity of the joint (knock-knees orknee  begins  to  affect  range  of  motion,
bow-legs).
Arthritis of the knee can be especially
Evaluation of a patient with knee arthritisdifficult to deal with for many patients
should begin with a physical examination andsince their mobility can be seriously limited
X-Rays. These can serve as a baseline toonce the disease progresses. Beginning
evaluate later examinations and determinetreatment early, and learning the proper way
progression  of  the  condition.to care for a damaged knee are all important
in maintaining an active lifestyle despite
Treating  Knee  Arthritis?the disease.



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