In this video, Patrick Denard explains how the success of shoulder replacement surgery is evaluated. He first highlights patient satisfaction, noting that over 90% of patients experience significant pain relief and improved range of motion. He then compares range-of-motion outcomes between anatomic and reverse shoulder replacements, stating that anatomic implants generally provide slightly better overall motion, especially for reaching behind the back, though the differences are modest. Denard discusses implant survival, reporting roughly 90% of implants remain functional at ten years and 70‑80% at twenty years. He emphasizes that individual factors—particularly patient age and activity level—affect the likelihood of needing a future revision, with younger, more active patients facing higher revision risk. Consequently, he stresses the importance of pre‑operative planning, choosing the appropriate implant type, and using bone‑preserving designs to facilitate potential future surgeries.
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So how successful is shoulder replacement? Well, you think about this in a couple of ways. Number one is patient satisfaction. If you just look at satisfaction or pain relief, it's a very successful procedure. Over 90% of people are going to be happy having relief of pain in their shoulder and have improved range of motion. Now, the range of motion that one achieves after reverse shoulder replacement is different than that after an anatomic replacement. The best anatomic replacement will provide better range of motion than the best reverse shoulder replacement if you look head to head. However, those differences are pretty small. If you look forward elevation or the ability to reach up, it's a very small difference. The biggest difference comes in the ability to reach behind the back. That has gotten better and better as reverse shoulder replacement has become more and more sort of anatomic in the design. But nonetheless, with reverse shoulder replacement, I commonly tell my patients that to expect slight limitation of rotation behind the back compared to that with an anatomic replacement. The other way we look at this or talk about the success of a shoulder replacement is survival. And what we mean there is survival of the implant, not survival of the patient. So somebody who has a shoulder replacement, if you just look at 10 years later and say, what are the odds they're still going to have that shoulder replacement in? It's about 90% at 10 years. If you go out 20 years, it's 70 to 80%, meaning that the probability that the implant has not been revised is very, very high. So very successful in those terms. But when it comes to an individual, you have to think about this not just in broad strokes of population, but what are the demands of the individual person. So if somebody is 75 undergoing a shoulder replacement, it is very unlikely that they're going to need a shoulder replacement again in their lifetime. However, if somebody is 55 years, for instance, the odds that they need another shoulder replacement in the future is quite high based on their life expectancy and a higher activity level. So what we do is think about that in advance. So I'm always thinking about, okay, how are we going to solve the person's problem now, but also how are we going to set ourselves up in the future if something else needs to be done? And that comes down to making decisions about the type of replacement but also using implants that are bone-preserving.
