Knee replacement surgery, also known as knee arthroplasty, is a medical procedure designed to relieve pain and restore function in severely diseased knee joints. It is typically recommended for individuals with advanced osteoarthritis, rheumatoid arthritis, or traumatic injury where other treatments like medication, physical therapy, or injections have failed to provide relief.
The procedure involves removing damaged cartilage and bone from the surface of the knee joint and replacing it with artificial components (prostheses) made of metal and plastic. These components replicate the movement and stability of a natural knee, allowing improved mobility and reduced pain.
There are two main types of knee replacement surgeries: total knee replacement (TKR) and partial knee replacement (PKR). In TKR, the entire joint surface is replaced, while in PKR, only the damaged portion is replaced, preserving more of the natural bone and ligaments.
Knee replacement surgery is usually performed under spinal or general anesthesia and takes about 1 to 2 hours. Patients typically stay in the hospital for 2 to 3 days and begin physiotherapy soon after surgery to regain movement and strength. Full recovery may take several weeks to a few months, depending on individual health and adherence to rehabilitation protocols.
Advances in surgical techniques, such as minimally invasive approaches and computer-assisted navigation, have significantly improved outcomes and reduced recovery time. Most patients experience significant pain relief, improved joint function, and a better quality of life post-surgery.
While knee replacement is generally safe, potential risks include infection, blood clots, implant loosening, or stiffness. With proper patient selection and skilled surgical care, these complications are rare.
Knee replacement surgery has proven to be a highly effective solution for chronic knee pain, helping patients return to daily activities with greater ease and comfort.