Knee replacement complications can result from surgery or a faulty implant. Knee replacement loosening is one of the most serious complications. It can lead to fractures or dislocation. Infection may mean replacing the implant. In rare cases, infection can lead to amputation. Some complications can happen during knee replacement surgery or within the first few weeks after surgery. Others may not show up until years after knee replacement surgery. Almost all serious knee replacement complications require some form of revision surgery. This is when a surgeon removes a faulty implant and replaces it with a new one.
Did you or a loved one suffer complications after receiving a knee replacement? You may be eligible for compensation.
Knee replacement complications can be serious medical problems. More serious complications need revision surgery to correct.
The American Academy of Orthopedic Surgeons (AAOS) says serious complications are rare. Fewer than one in 20 knee replacements needed another hospitalization.
Some knee implants fail at higher rates. This sometimes leads to knee replacement recalls.
A 2017 study looked at the DePuy Attune knee replacement. Researchers found it failed in two of every 15 cases they examined.
Loosening is one of the most common total knee replacement problems. Patients usually need knee revision surgery to fix it.
There are several causes for knee replacement loosening. Infection is one of the most likely causes.
Wear and tear on knee implant parts can also cause loosening.
Faulty components can lead to loosening, too. DePuy Attune knee replacement lawsuits claim cement connecting the device to bone failed.
Patients reported tibial loosening with DePuy Attune knee.
People also reported loosening with Zimmer NexGen uncemented knees. They claimed screws that connected the implant to bones sometimes failed.
Infections are a leading cause of knee replacement failure. They are also a serious knee replacement surgery complication.
Doctors can sometimes treat infection with antibiotics. But in some cases, patients may need revision surgery to remove the infection.
Infection can come from bacteria living on the knee implant. Or it may enter the surgical wound during surgery.
Thousands of people blame Bair Hugger devices for knee replacement infection complications. The surgical devices stabilize patients’ body temperature during knee replacement surgery.
Studies suggest Bair Huggers stir up bacteria on operating room floors. Air currents then carry the bacteria to the open surgery site.
Bair Hugger lawsuits claim patients needed amputations to stop the infections.
Knee replacement rejection is extremely rare. People may confuse it with infection, but it is different.
Implant rejection happens when metal in the implant triggers a reaction. This can be an allergic reaction or an autoimmune reaction.
Patients who suffer implant rejection need revision surgery to remove and replace the device.
Knee replacement fractures can happen to both bones and knee implants.
Bone fractures can happen in the thighbone, the kneecap or the tibia (one of the two bones in the lower leg).
Device fractures can cause the knee replacement to break apart.
They usually need knee revision surgery to repair.
A 2018 editorial in The Journal of Arthroplasty said instability “remains a common and devastating complication” of knee replacement.
Instability can cause excessive wear on knee replacement parts. Instability can also cause patients to fall, resulting in further injuries including fractures.
In the worst cases, instability can cause knee dislocation.
Knee dislocation is when the knee replacement implant pops out of the joint.
Knee replacement components have to be precisely aligned to work. If they do not line up, they can wear out too soon. Or the implant can fail without warning.
Excessive weight can increase the risk of failure if the parts are not aligned. Patients may need revision surgery to fix knee replacement misalignment problems.
Knee replacement surgery shares risks with other types of surgeries. Patients should talk with their doctors about these risks before surgery.
Nerve damage can happen with knee replacement surgery. It usually goes away within six months.
The AAOS says “pressure, stretching or cutting” can damage nerves.
Research suggests surgical tourniquets may put damaging pressure on nerves.
Surgeons also must cut and stretch skin and muscle during knee replacement surgery.
Some patients may experience knee replacement nerve block complications.
Doctors treat patients with nerve blocks to relieve pain following knee replacement surgery. Studies have found nerve blocks can sometimes delay recovery.
When swelling and joint pain happen together, it can be a sign of infection. They may also be a sign that there is a problem with the knee implant.
Pain alone can be difficult to diagnose. It can happen with almost any other knee replacement complication.
The risk of death from knee replacement is very low, but it does happen.
A 2017 study looked at leading causes of death within 90 days of knee replacement surgery. The main cause of death was ischemic heart disease (“hardening of the arteries”).
In a 2012 study, researchers in the U.K. analyzed nearly 2,500 people. All underwent total knee replacement over a 10-year span.
Researchers factored in predicted life expectancy based on age and gender. They found mortality rates were the highest in the 30 to 90 days following surgery.
The study reported survivability over 10 years. The researchers published their findings in The Bone & Joint Journal.
Clicking or popping sounds after surgery are a normal knee replacement side effect. This is not necessarily a complication.
The noise may be from the metal or plastic parts. Or it may be tendons adjusting to the new implant.
The sounds usually decrease or even go away after several months. Clicking by itself is not a serious problem.
But patients should let their doctor know if they experience pain, swelling or other noises along with the clicking.
“Most people also feel or hear some clicking of the metal and plastic with knee bending or walking. This is a normal.”
Complications can happen immediately after knee replacement surgery. Some knee replacement complications may take years to show up. Different complications may be more likely at different times.
Please seek the advice of a medical professional before making health care decisions.
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