If you're considering a hip or knee replacement, you're probably wondering: How long will it last?
After all, joint replacement is a big decision, and you want to be sure your new hip or knee will serve you well for as long as possible. The good news? Both hip and knee replacements are designed to last well over a decade, and many people enjoy 20 years or more of pain-free movement after surgery. The joint replacements I use have been known to last patients up to 30 years!
But is there a difference in longevity between the two? Let’s dive into what makes a hip replacement or knee replacement last—and how you can get the most out of your new joint.
How Long Do Hip and Knee Replacements Last?
When we look at long-term data, hip replacements generally have a slight edge over knee replacements in terms of durability. Here’s what the research shows:
Hip replacements: Around 90–95% last 15–20 years, with many lasting 25 years or more.
Knee replacements: About 82–90% last 15–20 years, but newer implant designs are showing strong 25-year survival rates too.
So, while both have excellent longevity, hips tend to outlast knees slightly. Why is that?
Why Do Hip Replacements Tend to Last Longer?
A few key factors come into play when comparing hip and knee replacement longevity:
1. Simpler Joint Mechanics
The hip is a ball-and-socket joint, meaning it moves smoothly in multiple directions. Hip replacements closely mimic this natural movement, making them more stable and durable over time.
Knees, however, are hinge joints with more complex movement patterns. Every time you walk, squat, or twist, the knee replacement experiences more wear and tear, increasing the risk of loosening or instability over time.
2. Impact and Load Differences
Both joints bear weight, but the knee often takes more direct impact—especially during activities like running, jumping, or kneeling. The higher stress levels on knee implants can lead to faster wear compared to hip implants.
3. Implant Wear and Loosening
Hip replacements have benefitted from advances in materials, such as ceramic and highly cross-linked polyethylene, which have significantly reduced wear rates.
Knee replacements, on the other hand, have multiple components that work together—which means more potential points for wear or movement issues over time.
So, is there a difference between how long a hip replacement and a knee replacement last? Yes—but it’s not huge.
Hip replacements generally have a longer lifespan due to their simpler mechanics and lower stress levels. However, knee replacements have come a long way, and many now last just as long with proper care.
The most important factor? How you feel after your new joint. With the right approach, you can enjoy decades of pain-free movement—whether you’ve had a hip or a knee replacement.
If you’re considering joint replacement surgery, my team is here to help. We can help you find the right solution for you so you can get back to living your best, pain-free life!