If the arthritis is only affecting one side of the joint, the patient may be a partial knee replacement candidate. These procedures are less invasive and offer quicker recovery times. It also allows for you to benefit from the part of the biological knee that is still healthy. Partial knee replacement may require additional procedures to be done down the road as well. Only about 1 in 10 patients who have a partial knee replacement need a revision after 10 years.
Improvements in surgical techniques, materials, prosthetic design, and fixation have improved dramatically over time. As a result, this has significantly increased how long a total knee replacement lasts. Several factors affect how long a knee replacement lasts.
These include the patient's condition, age, body weight, and the surgical implant. Younger patients often ask how long does a total knee replacement last and will need the implant to last longer than older patients. Exercises that are stressful on the joint, such as running and jumping can increase the wear on a joint replacement.
Just as high impact exercise can add stress to a joint replacement, so can excess weight. The closer a patient is able to stay towards a normal weight for their body can increase the longevity of the implant. Patients who have medical conditions such as osteoporosis which can cause fractures may have an increased chance of a failed knee replacement.
Procedures done post-surgery or diseases that increase the risk for infection can also cause complications following a total knee replacement surgery. Although you can expect many knee replacements to last up to 20 years, the younger the patient is at the time of surgery affects the possibility of revision.
With new advancements in technology and medical research, the goal is to improve the longevity of these joints to surpass 20 years for future patients. We may be seeing patients at a younger age living out the rest of their lives with the same joint replacement.
In addition, a number of factors, including surgical technique and surgeon experience, how many operations a particular hospital or surgeon performs each year, and patient factors including age, weight and activity level can all have powerful effects on how long a replaced joint lasts. But we do have an idea of how long a joint replacement will last based on data from past surgeries. We still quote similar numbers. But it might be better than that.
With better preparation prior to surgery including "prehab" exercise and loss of excess weight , improved materials in the replacement, better surgical techniques and anesthesia, and better physical rehabilitation after surgery, your joint replacement of the knee or hip is more likely to be successful and last the rest of your life than ever before.
One is that it can take a decade or more to collect data on past operations to predict the success of future operations.
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