Knee Replacements How Successful Are They?
Knee replacement surgery is a popular operative procedure
, mainly because of its high success rate. Total knee replacement surgery, especially, is the most popular treatment option in the United States and Canada. The operative procedure, in most cases, enables a patient to lead a relatively pain-free and uninhibited life for a number of years. However, critics point out that such procedures are not suitable for everyone. Specifically, such procedures are not suitable for sportspersons. Also, the success rate dips when it comes to replacing the prosthetic implants.
Success rate of the procedure
According to the American Medical Association, more than 580,000 knee replacements are completed every year in the United States. The association points out that Total Knee Replacements (TKR) are more popular than partial knee replacements. The American Academy of Orthopedic Surgeons (AAOS) points out that the success rate of Total Knee Replacements (TKR) is more than 90 percent in case of first replacement. It adds that post operation, a patient experiences a perceptible improvement in their conditions as the pain reduces and they are able to resume their day-to-day activities. The American Academy of Orthopedic Surgeons (AAOS) maintains that an average knee replacement lasts between 15 and 20 years, depending on the amount and the type of activities a patient performs.
Reasons for popularity
Total Knee Replacements (TKR) significantly improves the knee conditions of a patient and the patient is able to resume day-to-day activities. Here are the main reasons for the popularity of TKR:
Usually, a patient experiences a notable reduction in pain. Earlier, mainly because of arthritis, injuries and fractures, a patient would suffer from severe pain in the knee joint and would be unable to perform day-to-day activities. In such cases, one or both the knee joints are damaged. Knee replacement implants a new, artificial knee joint which allows smooth functioning of the knee.
A replaced knee allows the patient to move, bend and flex the knee freely. When the natural knee is damaged because of injuries, arthritis or other abnormalities, the ability of the knee to move freely is severely restricted. The accompanying pain only adds to the trouble. An artificial knee restores free movement by replacing knee joints with prosthetic implants.
Limitations of Total Knee Replacements
On a number of occasions, TKRs have failed to achieve the desired results. Here are some of the reasons for the failure:
Prosthetic parts, which are implanted into the knee joints, are mostly made of titanium or plastic. Such parts are not equipped to endure heavy activities such as running, weightlifting, or climbing of stairs. This is why; doctors discourage patients to engage in sporting activities which demand intense physical engagement.
Usually, a patient requires a replacement of the artificial knee joints after some years. It has been observed that replaced prosthetic implants are not as successful as their predecessors.
The success of knee replacements, to a large extent, depends on the physical activities a patient undertakes. The first prosthetic implants usually tend to last more with patients who refrain from undertaking heavy physical activities.
by: Brian Anderson
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