Partial knee replacement is a minimally invasive surgical procedure that
resurfaces the worn, arthritic surfaces of the knee joint with metal and
plastic components. Over time, the cartilage covering the ends of the
femur (thighbone) and tibia (shinbone) can wear away causing pain, swelling
and reduced mobility. If the wear is confined to one area of the knee,
partial knee replacement may be an option.
What Is the Difference Between a Partial Knee Replacement and a Total Knee
Replacement?
The knee joint is made up of three bones - the femur, the tibia and the
patella, or knee cap. The femur contacts the tibia with two areas, called
condyles - the medial condyle and the lateral condyle. The underside of
the kneecap also contacts the femur and tibia as it glides along the groove
in the femur. Any of these three areas of contact can fall victim to the
wear and tear effects of arthritis - causing pain, heat, stiffness and
swelling. Total knee replacement involves the replacement of all three
surfaces with metal and plastic components. If arthritis is limited to
either the lateral or medial compartment of the knee, partial knee replacement
may be considered.
Who Is a Candidate?
Partial knee replacement may be an option for those who have painful, debilitating
arthritis limited to one area of the knee and who no longer get relief
from conservative measures, such as physical therapy, medications or weight
loss. Only your doctor can determine if you are a candidate for this procedure.
What Are the Advantages?
Because the partial knee replacement artificial joints are smaller than
total knee implants, the surgical incision may be smaller. A smaller incision
may lead to a smaller scar. Other potential benefits to partial knee replacement
include a shorter hospital stay compared to a total knee replacement.
Rehabilitation may also be more accelerated.1 Because less bone is removed
and there is less trauma to soft tissue during surgery, your knee may
feel more natural than with a total knee replacement. Not all patients
are candidates for partial knee replacement. Depending on your condition,
a total knee replacement may be recommended by your doctor.
How Long Is the Recovery Period?
Many people will be able to go home the day after the procedure. Because
most of the knee joint is left intact after the operation, there is usually
less pain than with total knee replacement. Keep in mind these are just
estimates and recovery and healing times vary with each person.
How Long Will It Last?
All knee replacements can wear out over time, including total knee replacements.
How long a particular implant may last varies from patient to patient
and depends on a number of factors including the patient's weight, activity
level and the accuracy of the implant's placement.
What if I Have Other Questions?
Just give us a call at
608.289.3154. We are glad to answer any questions you may have. And be sure to ask
us about our upcoming seminars on knee and hip pain - we'd love to see you!
