Surgeons are doing fewer knee surgeries

When knee arthroscopy became widely available in the 1980s, it represented a major advance. Today orthopedists evaluating and treating common knee problems often recommend arthroscopy, during which they insert an instrument into the joint and, with a light and camera on its tip, directly inspect the knee from the inside. While there, he or she can diagnose and treat common painful knee problems, such as arthritis or torn cartilage. The risks are much lower and recovery times much shorter than standard “open” knee operations.

As with any technology or other advance in medicine, years of research were required to understand when best to use it. Not surprisingly, arthroscopy turns out to be much more helpful for some conditions than others. For example, if you have a sports injury in which the medial meniscus (a crescent-shaped, shock absorbing wedge of cartilage) is torn and blocking the motion of the knee, arthroscopic surgery can provide dramatic relief in a short period of time.

But studies have demonstrated convincingly that for many other common causes of knee pain, including osteoarthritis and many instances of torn cartilage that do not block joint motion, medications and physical therapy may work just as well as arthroscopic surgery. Despite these recent data, some orthopedists continued to recommend arthroscopic surgery for these conditions. Now, that seems to be changing.

A new study says the number of knee arthroscopies is falling

Data recently published in JAMA Internal Medicine demonstrate that between 2002 and 2015, the rate of arthroscopic surgery in Florida

  • decreased from 449 to 345 per 100,000 people (a 23% decline)
  • dropped more among adults under age 65 (24% reduction) than among those over 65 (19% reduction)
  • fell most dramatically after 2008 (after a second important trial showed no benefit of arthroscopy for osteoarthritis of the knee).

Is this a good thing?

Reducing the number of unnecessary operations is certainly a good thing, especially for one that is so common. However, we don’t know if the reduction in arthroscopies occurred for the right reasons: while it’s possible that the reduction was because orthopedists are recommending them more selectively (and more appropriately), it’s also possible that people are not getting the surgery due to lack of insurance, trouble finding an orthopedist, or because they just prefer not to have surgery. We don’t know about patients’ health or outcomes: are some people suffering because they didn’t have an arthroscopy they needed? How many had arthroscopies they did not need and had complications, or simply didn’t improve?

We also don’t know whether rates are falling in other states. Still, it’s reasonable to assume that knee arthroscopies are being performed less often because we better understand when they are likely to help and when they are not.

Why does change take so long?

At the risk of gross over generalization, doctors tend to avoid change. That’s true of many — but certainly not all — of my colleagues. Who else is still using beepers and fax machines on a daily basis? So, some of the reluctance of orthopedists to change their practice in the face of studies questioning the usefulness of knee arthroscopy may be this tendency to resist change. Another reason might be financial considerations: surgical procedures tend to generate a large income stream for the doctor and the hospital or surgical center.

But it’s also true that a single study is rarely enough to change medical practice — doctors are, with good reason, a skeptical bunch. Subsequent research must verify and confirm a new finding. Perhaps that’s why the rate of knee arthroscopy dropped most significantly after the publication of a second trial regarding knee osteoarthritis.

What’s next?

You can expect to hear much more about studies that challenge standard practice, especially when that practice is invasive (including surgery) and expensive. My guess is that the number of knee arthroscopies will continue to fall for some time, until only the most appropriate ones are being done.

When it comes to standard but treatments being called into question, the big question is, indeed, “what’s next?” The answers will come once high-quality research is performed by skeptical researchers willing to question the status quo.

Follow me on Twitter @RobShmerling

Related Information: Living Well with Osteoarthritis: A guide to keeping your…

Below are spiritual recipe for health and wellness: Matthew E. McLaren

“Finally, brothers and sisters, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable–if anything is excellent or praiseworthy–think about such things.” – Philippians 4:8

 “Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours.” – Mark 11:24

 “Anxiety weighs down the heart, but a kind word cheers it up.” – Proverbs 12:25

 “Who of you by worrying can add a single hour to your life?” – Luke 12:25

 “For I know the plans I have for you, declares the Lord, plans for welfare and not for evil, to give you a future and a hope.” – Jeremiah 29:11

“If you, then, though you are evil, know how to give good gifts to your children, how much more will your Father in heaven give good gifts to those who ask him!” – Matthew 7:11

 “A cheerful heart is good medicine, but a crushed spirit dries up the bones.” – Proverbs 17:22

 “Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God.” – Philippians 4:6

 “Above all else, guard your heart, for everything you do flows from it.” – Proverbs 4:23

 “For God has not given us a spirit of fear, but of power and of love and of a sound mind.” – 2 Timothy 1:7

 “Consider it pure joy, my brothers and sisters,[a] whenever you face trials of many kinds, because you know that the testing of your faith produces perseverance.” – James 1:2-3

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