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  • Osteoarthritis Questions & Answers

Osteoarthritis Questions & Answers

The risk of developing OA can include factors such as repetitive strain on the knee, previous knee injury, or being overweight. Know the symptoms and talk to your doctor to see if you’re a candidate for surgery.

What is Osteoarthritis?

Osteoarthritis (OA) is a form of arthritis and a degenerative joint disease characterized by the breakdown and eventual loss of joint cartilage. Cartilage is a protein substance that serves as a cushion between the bones of a joint. With OA, the top layer of cartilage breaks down and wears away, allowing bones under the cartilage to rub together.

What causes OA of the knee?

Although the root cause of OA is unknown, the risk of developing symptomatic OA is influenced by multiple factors such as age, gender and inherited traits that can affect the shape and stability of your joints. Other factors can include:

  • A previous knee injury
  • Repetitive strain on the knee
  • Improper joint alignment
  • Being overweight
  • Exercise or sports-generated stress placed on the knee joints

What are the symptoms of OA of the knee?

Symptoms of OA of the knee include:

  • Pain while standing or walking short distances, climbing up or down stairs, or getting in and out of chairs
  • Knee pain with activity
  • Start-up pain or stiffness when activities are initiated from a sitting position
  • Stiffness in your knee joint after getting out of bed
  • Swelling in one or more areas of the knee
  • A grating sensation or crunching feeling when you use your knee

How is OA of the knee diagnosed?

Your physician will begin by reviewing your medical history and discussing your symptoms. He or she will observe the natural movement of your knee, evaluate your knee and ankle joint alignment, and check your reflexes, muscle strength, range of motion and ligament stability in the affected knee. Your physician may order X-rays to determine how much joint or bone damage has been done, how much cartilage has been lost and if there are bone spurs present. Additional tests may be ordered to determine exactly where the damage is and its extent.

How is OA treated?

Whether your OA is mild or severe, your physician will most likely recommend certain lifestyle changes to reduce stress on your knee joints. Additional disease and pain management strategies may include: physical therapy, steroid injections, over-the-counter pain medications such as acetaminophen or topical pain relieving creams. Please speak with your physician if your symptoms aren't responding to non-surgical solutions, or your pain can no longer be controlled by medication. You could be a candidate for surgery.

The most common surgical knee intervention performed for OA is a total knee replacement. During this procedure, the natural joint is removed and replaced with an artificial implant. This treatment option is usually offered to patients with advanced osteoarthritis of the knee.

Total knee replacement is not always optimal for patients with early to mid-stage osteoarthritis in just one or two compartments of the knee. For patients with partial OA of the knee, MAKOplasty® Partial Knee Resurfacing may be the more appropriate solution.

Back to Joint Replacement
  • Osteoarthritis Questions & Answers
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