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What is a Uni Knee?
A uni knee, also known as a unicondylar knee replacement, is a surgical procedure designed to replace only one part of the knee joint, typically the patellofemoral joint or the tibiofemoral joint. Unlike total knee replacement, which involves replacing the entire knee joint, a uni knee is a more conservative option for patients suffering from knee pain and limited mobility.
Understanding the Procedure
The uni knee procedure is typically performed on an outpatient basis, meaning patients can go home the same day. During the surgery, the damaged part of the knee joint is removed and replaced with a prosthetic component. This component is designed to mimic the natural movement of the knee and provide pain relief and improved mobility.
There are two main types of uni knee procedures: patellofemoral and tibiofemoral. The patellofemoral uni knee is used when the patella (kneecap) and the femur (thigh bone) are damaged, while the tibiofemoral uni knee is used when the tibia (shin bone) and the femur are affected.
Who is a Good Candidate for a Uni Knee?
Not everyone is a suitable candidate for a uni knee procedure. The following factors may make you a good candidate:
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Pain and limited mobility in only one part of the knee joint
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Damage to the patellofemoral or tibiofemoral joint
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Age between 30 and 80 years old
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Healthy bone and soft tissue
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Non-smoker
It is important to consult with a healthcare professional to determine if a uni knee is the right choice for you.
Preparation for the Procedure
Before undergoing a uni knee procedure, you will need to undergo a series of preoperative evaluations. These may include:
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Physical examination
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Imaging studies, such as X-rays or MRI
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Medical history review
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Preoperative blood tests
Your healthcare provider will also discuss the risks and benefits of the procedure, as well as any alternative treatment options.
The Surgery
The uni knee surgery is typically performed under general anesthesia. The surgeon will make an incision over the affected knee joint and remove the damaged bone and cartilage. The prosthetic component is then attached to the remaining bone, and the incision is closed with sutures or staples.
The surgery may take anywhere from 1 to 2 hours, depending on the complexity of the case.
Recovery and Rehabilitation
Recovery from a uni knee procedure can vary from person to person. Most patients will experience some pain and swelling in the first few days after surgery. Pain medication and ice packs can help manage discomfort.
Physical therapy is an essential part of the recovery process. You will be given exercises to help strengthen the muscles around the knee joint and improve mobility. It is important to follow your physical therapist’s instructions and attend all scheduled appointments.
Most patients can return to their normal activities within 6 to 12 weeks after surgery. However, it may take several months to fully recover and regain full range of motion.
Risks and Complications
| Risk | Description |
|---|---|
| Infection | Any surgical procedure carries a risk of infection, which can be treated with antibiotics. |
| Blood clots | Patients may develop blood clots in the legs, which can be prevented with blood-thinning medications and compression stockings. |
| Implant loosening or failure | The prosthetic component may become loose or fail over time, requiring revision surgery. |
| Stiffness or limited range of motion | Some patients may experience stiffness or limited range of motion in the knee joint after surgery. |