An Increase of Hip an Knee Surgical Procedures

As technology continues to grow, more surgical procedures, specifically knee and hip replacements are increasing at a quick pace. Mostly due to the developments in surgery as well as prostheses.

Although the procedures are still mostly performed on people over 65, there is a growing population of individuals who range from 38 to 56 who are getting hip and knee implants or prostheses.

According to the American Academy of Orthopedic Surgeons, individuals aged mid-thirties to late fifties had 35,000 hip replacements or 21 percent of the total procedures in 2003, the last year for which figures are available. That’s up from 26 percent of all procedures in 1997. Additionally individuals in this age group had 48,000 knee replacements or 15 percent of the total 2003, up from 22 percent in 1997.

It has been suggested by medical professionals that nearly 21 million individuals are affected by osteoarthritis, which makes up nearly 90 percent of replacements.

Osteoarthritis is a degenerative disease characterized by the breakdown of a joint’s cartilage, and is caused by a variety of factors including injuries, obesity and genetics. The breakdown causes bones to rub against each other, resulting in pain and loss of movement.

The incidence of arthritis increases as people age. The last year statistics that were available in 2002, the U.S. Nearly 43 million U.S. adults have been diagnosed with some form of arthritis, lupus, gout, fibromyalgia or rheumatoid arthritis, according to the Centers for Disease Control and Prevention (CDC).

There are nearly 23 million of those who have not been diagnosed with arthritis but complain of chronic joint symptoms, likely arthritis,. One in five, or 21 percent, of adults report having doctor-diagnosed arthritis.

In total 51 percent of adults 75 years and over reported an arthritis diagnosis. The CDC estimates that by 2030, approximately 64.Physicians will likely diagnose nearly 9 million U.S. citizens aged 18 and older.

Both patients and their physicians use to delay joint replacement surgeries because of the dangers and likelihood that an implant would only last 10 years. Now some prostheses are expected to last 25 years, but there are still risks associated with implants and with the surgery in general.

Artificial joints or prostheses are medical devices; they must be cleared or approved by the Food and Drug Administration (FDA) before they can be marketed in the United States.

In addition, FDA permission is required before a company can test a new or redesigned prosthesis in human studies. The data gathered in these studies, which take place in specific hospitals, may then be used to support a company’s application for marketing its prosthesis to surgeons and hospitals. The product or device must be proven safe and effective.

The FDA assures safety and effectiveness through different means depending on the risks of a particular device and the technology that it presents. For devices with a history of safe and effective use, frequently those using established technology, the FDA relies on a set of general controls to determine which devices can be deployed.

The general controls are augmented with special controls such as standards or standard test methods. However, for devices that involve new uses or advanced technology the FDA often requires that a particular device be demonstrated to be safe and effective through clinical trials.

As has been proven with some devices in the past these clinical trials do not always identify all of the potential issues that may be associated with a new type of hip or knee prostheses.

In addition just like any surgery, hip and knee joint replacement carries certain life-threatening risks, such as infection, blood clots and complications from anesthesia. Other complications include nerve damage, dislocation or breakage after surgery, and wearing out or loosening of the joint over time.

It has been found that in some individuals one leg is shorter than the other after a hip replacement procedure. Infection is an ongoing risk for people with joint replacements. Not only can it occur in the hospital, but also it can happen years later if bacteria travel through the bloodstream to the replacement area. In the rare case that an infection spreads to the new joint and does not clear up with antibiotic treatment, the joint must be replaced. This usually requires two surgeries–one to remove the infected joint and another surgery later to insert the new joint.

An individual’s choice of device and surgeon to repair hip or knee injuries is critical to avoiding serious future complications. If problems relating to prosthesis exist the person should in many cases seek legal advice.

About the Author

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