2024-01-01 · knee, orthopedic, surgery
Knee Replacement Surgery FAQ
What Is Knee Replacement Surgery?
Knee replacement surgery, or knee arthroplasty, replaces damaged joint surfaces with artificial components to relieve pain and restore function. It is commonly performed for advanced arthritis or severe joint damage that limits daily activities.
Who Is a Good Candidate for Knee Replacement?
Knee replacement is typically recommended when conservative treatments are no longer effective. Common signs include:
- Severe knee pain that limits walking, stairs, or sleep
- Stiffness and reduced range of motion
- Significant arthritis on imaging
- Limited relief from medications, injections, or therapy
What Causes Knee Joint Damage?
Several conditions can damage the knee joint, such as:
- Osteoarthritis (wear-and-tear arthritis)
- Rheumatoid or inflammatory arthritis
- Post-traumatic arthritis after injury
- Cartilage loss or deformity of the joint
About the Knee Replacement Procedure
Knee replacement is performed under general or spinal anesthesia. The surgeon removes damaged cartilage and bone, reshapes the joint surfaces, and places metal and plastic components to create a smooth, stable joint. The surgery typically takes one to two hours.
What Happens After Surgery?
Early movement is encouraged, often the same day as surgery. Physical therapy starts quickly to improve strength, flexibility, and walking ability. Many patients go home within one to three days, though some need a short rehabilitation stay.
How Long Is Recovery After Knee Replacement?
Recovery varies, but most people follow this general timeline:
- Walking with assistance within days
- Improved mobility over 4 to 6 weeks
- Ongoing strengthening for 3 to 6 months
- Full recovery and maximal improvement around 6 to 12 months
What Are the Possible Risks or Complications?
Potential complications include:
- Infection or wound healing problems
- Blood clots
- Stiffness or persistent pain
- Implant loosening or wear over time
- Nerve or blood vessel injury (rare)
Your surgeon will review steps taken to reduce these risks.
Will I Be Able to Return to Normal Activities?
Most patients return to low-impact activities such as walking, cycling, and swimming. High-impact sports are usually discouraged to protect the implant. A structured physical therapy program helps optimize outcomes.
When Should I Seek Medical Attention?
Seek care promptly for fever, increasing redness or drainage from the incision, severe swelling, or sudden shortness of breath. These symptoms can indicate complications that require urgent evaluation.