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Frequently Asked Questions about Knee Replacement

What is a total knee replacement?

The knee joint is composed of three parts: the end of the femur (thighbone), the top of the tibia (shinbone), and the patella (kneecap). In a normal knee, these three bones are covered with a smooth cartilage that cushions the bones and enables them to move easily. In the arthritic knee, the cartilage layers are destroyed, resulting in bone rubbing against bone, which causes pain, muscle weakness and limited motion. 

Total knee replacement surgery involves the resurfacing of the knee joint. Metal components are attached to the ends of the bones and a plastic liner is inserted between them. The kneecap is resurfaced with a plastic liner. These components move together to allow normal motion of the knee joint. 

What risks are associated with joint replacement surgery? 

As with any surgery, you should be aware that there are risks involved. These risks could include, but are not limited to: 

  • Problems with anesthesia
  • Infection
  • Bleeding
  • Blood clots
  • Nerve or blood vessel damage
  • Dislocation or failure of the joint replacement
  • Unresolved pain
  • Stiffness in the joint
  • Death

Be sure to discuss the risks and benefits of joint replacement surgery with your physician. And, of course, once your surgery is scheduled, be sure to attend a free Every Step of the Way class

What results can be expected from a joint replacement? 

Anticipated results are increased mobility and range of motion in the affected joint, giving you the ability to resume an active lifestyle with little or no pain, and deformities corrected. Long-term success rates vary from 10-20 years, depending on age, weight, activity level and other factors. Each person is different, so you should discuss expected outcomes and results with your orthopedic surgeon and physical therapist. 

How soon can I return to my normal activities after surgery? 

This varies for each patient and depends on your recovery. By six weeks post-surgery, most patients are able to walk without a cane. You will probably feel well enough to drive a car within two months after surgery. In most cases, successful joint replacement surgery will relieve pain and stiffness, and allow you to resume many of your daily activities. Your orthopedic surgeon and physical therapist will evaluate you throughout your recovery to determine the level of activity you can perform and when. 

How long should I continue to do the exercises after my joint replacement surgery? 

Exercise should be done until you have met the goals set by you, your orthopedic surgeon, and your physical therapist. Remember, it’s a team effort!

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